ENGLISH
: Appears when the entire equation cannot be displayed. Press </> to see the remaining (hidden) section. : Indicates that data can be visible above/below the screen. These indications may appear when menu, multi-line playback, and statistics data are displayed. Press [/] to scroll up/down the view.

SCIENTIFIC CALCULATOR

EL-509W EL-531W EL-531WG MODEL EL-531WH

OPERATION MANUAL

PRINTED IN CHINA / IMPRIM EN CHINE / IMPRESO EN CHINA 04LGK (TINSE0706EH02)
[Deletion key] To delete a number/function, move the cursor to the number/function you wish to delete, then press d. If the cursor is located at the right end of an equation, the d key will function as a back space key.
Determination of the Angular Unit
In this calculator, the following three angular units (degrees, radians, and grads) can be specified.

DEG ()

Multi-line Playback function
This calculator is equipped with a function to recall previous equations in the normal mode. Equations also include calculation ending instructions such as = and a maximum of 142 characters can be stored in memory. When the memory is full, stored equations are deleted in the order of the oldest first. Pressing [ will display the previous equation and the answer. Further pressing [ will display preceding equations (after returning to the previous equation, press ] to view equations in order). In addition, @[ can be used to jump to the oldest equation. To edit an equation after recalling it, press > (<). To edit the displayed equation, press > (<) immediately after obtaining a calculation answer. The multi-line memory is cleared by the following operations: @c, @F (including the Automatic Power Off feature), mode change, memory clear (@), RESET, @ `, K (R) ?, constant calculation, chain calculation, angle unit conversion, coordinate conversion, N-base conversion, numerical value storage to the temporary memories and independent memory, and input/deletion of statistical data.

Press G

GRAD (g) RAD (rad)

2ndF HYP

: Appears when @ is pressed, indicating that the functions shown in orange are enabled. : Indicates that h has been pressed and the hyperbolic functions are enabled. If @H are pressed, the symbols 2ndF HYP appear, indicating that inverse hyperbolic functions are enabled.

SCIENTIFIC CALCULATIONS

Press m0 to select the normal mode. In each example, press to clear the display. And if the FIX, SCI, or ENG indicator is displayed, clear the indicator by selecting NORM1 from the SET UP menu.
ALPHA: Indicates that K (STAT VAR), O or R has been pressed, and entry (recall) of memory contents and recall of statistics can be performed. FIX/SCI/ENG: Indicates the notation used to display a value and changes by SET UP menu. DEG/RAD/GRAD: Indicates angular units and changes each time G is pressed.

INTRODUCTION

Thank you for purchasing the SHARP Scientific Calculator Model EL-509W/531W/531WG/531WH. About the calculation examples (including some formulas and tables), refer to the reverse side of this English manual. Refer to the number on the right of each title on the manual for use. After reading this manual, store it in a convenient location for future reference. Note: Some of the models described in this manual may not be available in some countries.

Arithmetic Operations

The closing parenthesis ) just before = or ; may be omitted.
: Appears when statistics mode is selected. : Indicates that a numerical value is stored in the independent memory.

Constant Calculations

In constant calculations, the addend becomes a constant. Subtraction and division are performed in the same manner. For multiplication, the multiplicand becomes a constant. When performing calculations using constants, constants will be displayed as K.
BEFORE USING THE CALCULATOR Key Notation Used in this Manual

In this manual, key operations are described as follows: To specify ex : To specify ln : To specify F : @e I K
Priority Levels in Calculation
This calculator performs operations according to the following priority: Q Fractions (1l4, etc.) W Functions preceded by their argument (x-1, x2, n!, etc.) E Yx, x R Implied multiplication of a memory value (2Y, etc.) T Functions followed by their argument (sin, cos, etc.) Y Implied multiplication of a function (2sin30, etc.) U nCr, nPr I , O +, P AND { OR, XOR, XNOR } =, M+, M, M, |DEG, |RAD, |GRAD, DATA, CD, r, xy and other calculation ending instructions If parentheses are used, parenthesized calculations have precedence over any other calculations.

Functions

Refer to the calculation examples of each function. Before starting calculations, specify the angular unit.

Operational Notes

Do not carry the calculator around in your back pocket, as it may break when you sit down. The display is made of glass and is particularly fragile. Keep the calculator away from extreme heat such as on a car dashboard or near a heater, and avoid exposing it to excessively humid or dusty environments. Since this product is not waterproof, do not use it or store it where fluids, for example water, can splash onto it. Raindrops, water spray, juice, coffee, steam, perspiration, etc. will also cause malfunction. Clean with a soft, dry cloth. Do not use solvents or a wet cloth. Do not drop it or apply excessive force. Never dispose of batteries in a fire. Keep batteries out of the reach of children. This product, including accessories, may change due to upgrading without prior notice.

Random Function

The Random function has four settings for use in the normal or statistics mode. (This function cannot be selected while using the N-Base function.) Press to exit. The generated pseudo-random number series is stored in memory Y. Each random number is based on a number series. [Random Numbers] A pseudo-random number, with three significant digits from 0 up to 0.999, can be generated by pressing @`0. To generate the next random number, press. [Random Dice] To simulate a die-rolling, a random integer between 1 and 6 can be generated by pressing @`1. To generate the next random dice number, press. [Random Coin] To simulate a coin flip, 0 (head) or 1 (tail) can be randomly generated by pressing @`2. To generate the next random coin number, press. [Random Integer] An integer between 0 and 99 can be generated randomly by pressing @`3. To generate the next random integer number, press.

Functions that are printed in orange above the key require @ to be pressed first before the key. When you specify the memory, press K first. Numbers for input value are not shown as keys, but as ordinary numbers.

Power On and Off

Press to turn the calculator on, and @F to turn it off.
INITIAL SET UP Mode Selection
Normal mode (NORMAL): m0 Used to perform arithmetic operations and function calculations.
Clearing the Entry and Memories
Clearing methods are described in the table as follows: Clearing operation @c @00*6 @10*7 RESET switch : Clear : Retain Independent memory M. Temporary memory A-F, X and Y. Last answer memory. Statistical data (entered data). x, sx, x, n, x, x 2, , sy, y, y, y 2, xy, r, a, b, c. y All variables are cleared. See About the Memory clear key for details. *7 This key combination functions the same as the RESET switch. See About the Memory clear key for details. *1 *2 *3 *4 *5 *6 [About the Memory clear key] Press @ to display the menu. Entry (Display) M*

NOTICE

SHARP strongly recommends that separate permanent written records be kept of all important data. Data may be lost or altered in virtually any electronic memory product under certain circumstances. Therefore, SHARP assumes no responsibility for data lost or otherwise rendered unusable whether as a result of improper use, repairs, defects, battery replacement, use after the specified battery life has expired, or any other cause. SHARP will not be liable nor responsible for any incidental or consequential economic or property damage caused by misuse and/or malfunctions of this product and its peripherals, unless such liability is acknowledged by law. Press the RESET switch (on the back), with the tip of a ballpoint pen or similar object, only in the following cases. Do not use an object with a breakable or sharp tip. Note that pressing the RESET switch erases all data stored in memory. When using for the first time After replacing the batteries To clear all memory contents When an abnormal condition occurs and all keys are inoperative. If service should be required on this calculator, use only a SHARP servicing dealer, SHARP approved service facility, or SHARP repair service where available.

A-F, X,Y* STAT* ANS*3 STAT VAR*5
Statistics mode (STAT): m1 Used to perform statistical calculations. When executing mode selection, temporary memories, statistical variables, statistical data and last answer memory will be cleared even when reselecting the same mode.

SET UP menu

Press to display the SET UP menu.

FSE TAB

A menu item can be selected by: moving the flashing cursor by using ><, then press (= key), or pressing the number key corresponding to the menu item number. or is displayed on the screen, press [ or ] to If view the previous/next menu screen. Press to exit the SET UP menu. [Selecting the Display Notation and Decimal Places] The calculator has four display notation systems (Floating point, Fixed decimal point, Scientific notation and Engineering notation) for displaying calculation results. When the FIX, SCI, or ENG symbol is displayed, the number of decimal places (TAB) can be set to any value between 0 and 9. Displayed values will be reduced to the corresponding number of digits. If a floating point number does not fit in the specified range, the calculator will display the result using the scientific notation (exponential notation) system. See Setting the Floating Point Numbers System in Scientific Notation for details. Press , followed by 0, to display the following submenu: FIX SCI ENG NORM1 NORM2 ]

Angular Unit Conversions

Each time @g are pressed, the angular unit changes in sequence.

Memory Calculations

This calculator has 8 temporary memories (A-F, X and Y), one independent memory (M) and one last answer memory (ANS). The independent memory and temporary memories are only available in the normal mode. [Temporary memories (A-F, X and Y)] Press O and a corresponding variable key to store a value in memory. Press R and a corresponding variable key to recall a value from the memory. To place a variable in an equation, press K, followed by a desired variable key. [Independent memory (M)] In addition to all the features of temporary memories, a value can be added to or subtracted from an existing memory value. Press OM to clear the independent memory (M). [Last answer memory (ANS)] The calculation result obtained by pressing = or any other calculation ending instruction is automatically stored in the last answer memory. Note: Calculation results from the functions indicated below are automatically stored in memories X or Y. For this reason, when using these functions, be careful with the use of memories X and Y. Random function.. Y memory r, xy.. X memory (r or x), Y memory ( or y) Temporary memories and last answer memory are cleared even when the same mode is reselected. Use of R or K will recall the value stored in memory using up to 14 digits.

MEM RESET

Hard Case
To clear all variables (M, A-F, X, Y, ANS, STAT VAR), press 00 or 0. To RESET the calculator, press 10 or 1. The RESET operation will erase all data stored in memory, and restore the calculator's default setting.
Entering and Correcting the Equation
[Cursor keys] Press < or > to move the cursor. You can also return to the equation after getting an answer by pressing > (<). See the next section for using the [ and ] keys. In the SET UP menu and other locations, use the < or > key to move the flashing cursor, then press (= key). If you need to scroll up/down the view, use the [ or ] key. Symbol Equation Display Mantissa Exponent [Insert mode and Overwrite mode in the Equation display] This calculator has two editing modes: insert mode (default), and overwrite mode. Pressing @ switches between the two modes. A triangular cursor indicates that an entry will be inserted at the cursor, while the rectangular cursor indicates to overwrite preexisting data as you make entries. To insert a number in the insert mode, move the cursor to the place immediately after where you wish to insert, then make a desired entry. In the overwrite mode, data under the cursor will be overwritten by the number you enter. This mode setting will be retained until the next RESET operation is executed.

DISPLAY

[Setting the Floating Point Numbers System in Scientific Notation] The calculator has two settings for displaying a floating point number: NORM1 (default setting) and NORM2. In each display setting, a number is automatically displayed in scientific notation outside a preset range: NORM1: 0.000000001 x 9999999999 NORM2: 0.01 x 9999999999
1000003= [Floating point (NORM1)] [Fixed decimal point] [TAB set to 2] [SCIentific notation] [ENGineering notation] [Floating point (NORM1)] 100000/3= 33333.33333 33333.33333 33333.33 3.331004 33.331003 33333.33333 0.003 3. 1003 0.003
During actual use, not all symbols are displayed at the same time. Certain inactive symbols may appear visible when viewed from a far off angle. Only the symbols required for the usage under instruction are shown in the display and calculation examples of this manual.

31000= [Floating point (NORM1)] 3/1000= [Floating point (NORM2)] 04 [Floating point (NORM1)] 03

Chain Calculations

This calculator allows the previous calculation result to be used in the following calculation. Do not fit partially used batteries, and be sure not to mix batteries of different types. Keep batteries out of the reach of children. Exhausted batteries left in the calculator may leak and damage the calculator. Explosion risk may be caused by incorrect handling. Do not throw batteries into a fire as they may explode.
The previous calculation result will not be recalled after entering multiple instructions. In the case of utilizing postfix functions ( , sin, etc.), you can perform a chain calculation even when the previous calculation result is cleared by the use of the key.

0 (SD) 1 (LINE)

: Single-variable statistics : Linear regression calculation
Statistical Calculation Formulas
Type Linear Exponential Logarithmic Power Inverse Quadratic Regression formula = a + bx = a ebx = a + b ln x = a xb 1 y=a+b x y = a + bx + cx2 y y y y
2 (QUAD) : Quadratic regression calculation 3 (EXP) 4 (LOG) 5 (PWR) 6 (INV) : Exponential regression calculation : Logarithmic regression calculation : Power regression calculation : Inverse regression calculation

Fraction Calculations

This calculator performs arithmetic operations and memory calculations using fractions, and conversion between a decimal number and a fraction. If the number of digits to be displayed is greater than 10, the number is converted to and displayed as a decimal number.

Replacement Procedure

1. 2. 3. 4. Turn the power off by pressing @ F. Remove two screws. (Fig. 1) Slide the battery cover slightly and lift it to remove. [EL-509W/531W/531WG] Remove the used batteries by prying them out with a ball-point pen or other similar pointed device. (Fig. 2) [EL-531WH] Remove the used battery. [EL-509W/531W/531WG] Install two new batteries. Make sure the + side is facing up. [EL-531WH] Install one new battery. First insert the side toward the spring. (Fig. 3) Replace the cover and screws. Press the RESET switch (on the back). Make sure that the display appears as shown below. If the display does not appear as shown, remove the batteries reinstall them and check the display once again.

The following statistics can be obtained for each statistical calculation (refer to the table below):
Binary, Pental, Octal, Decimal, and Hexadecimal Operations (N-Base)
This calculator can perform conversions between numbers expressed in binary, pental, octal, decimal and hexadecimal systems. It can also perform the four basic arithmetic operations, calculations with parentheses and memory calculations using binary, pental, octal, decimal, and hexadecimal numbers. In addition, the calculator can carry out the logical operations AND, OR, NOT, NEG, XOR and XNOR on binary, pental, octal and hexadecimal numbers. Conversion to each system is performed by the following keys: @: Converts to the binary system. appears. @: Converts to the pental system. appears. @: Converts to the octal system. appears. @: Converts to the hexadecimal system. appears. @: Converts to the decimal system. , , , and disappear from the display. Conversion is performed on the displayed value when these keys are pressed. Note: In this calculator, the hexadecimal numbers A F are entered by pressing , , L, , l, and I, and displayed as follows:

F A B C D E

Single-variable statistical calculation

Statistics of Q

Linear regression calculation
Statistics of Q and W and, in addition, estimate of y for a given x (estimate y) and estimate of x for a given y (estimate x)
In the statistical calculation formulas, an error will occur when: The absolute value of the intermediate result or calculation result is equal to or greater than 1 10100. The denominator is zero. An attempt is made to take the square root of a negative number. No solution exists in the quadratic regression calculation.
ERROR AND CALCULATION RANGES Errors
An error will occur if an operation exceeds the calculation ranges, or if a mathematically illegal operation is attempted. When an error occurs, pressing < (or >) automatically moves the cursor back to the place in the equation where the error occurred. Edit the equation or press to clear the equation. 6. 7.
Exponential regression, Logarithmic regression, Power regression, and Inverse regression calculation
Statistics of Q and W. In addition, estimate of y for a given x and estimate of x for a given y. (Since the calculator converts each formula into a linear regression formula before actual calculation takes place, it obtains all statistics, except coefficients a and b, from converted data rather than entered data.)
Error Codes and Error Types
Syntax error (Error 1): An attempt was made to perform an invalid operation. Ex. 2 @{ Calculation error (Error 2): The absolute value of an intermediate or final calculation result equals or exceeds 10100. An attempt was made to divide by 0 (or an intermediate calculation resulted in zero). The calculation ranges were exceeded while performing calculations. Depth error (Error 3): The available number of buffers was exceeded. (There are 10 buffers* for numeric values and 24 buffers for calculation instructions). *5 buffers in STAT mode. Data items exceeded 100 in the statistics mode. Equation too long (Error 4): The equation exceeded its maximum input buffer (142 characters). An equation must be shorter than 142 characters.

Quadratic regression calculation
Statistics of Q and W and coefficients a, b, c in the quadratic regression formula (y = a + bx + cx2). (For quadratic regression calculations, no correlation coefficient (r) can be obtained.) When there are two x values, press @. When performing calculations using a, b and c, only one numeric value can be held. x sx x n x x2 y sy y y y2 xy r a b c Mean of samples (x data) Sample standard deviation (x data) Population standard deviation (x data) Number of samples Sum of samples (x data) Sum of squares of samples (x data) Mean of samples (y data) Sample standard deviation (y data) Population standard deviation (y data) Sum of samples (y data) Sum of squares of samples (y data) Sum of products of samples (x, y) Correlation coefficient Coefficient of regression equation Coefficient of regression equation Coefficient of quadratic regression equation

(Fig. 1)

(Fig. 2)

(Fig. 3)

Automatic Power Off Function
This calculator will turn itself off to save battery power if no key is pressed for approximately 10 minutes.

A , B , C , D , E , F

In the binary, pental, octal, and hexadecimal systems, fractional parts cannot be entered. When a decimal number having a fractional part is converted into a binary, pental, octal, or hexadecimal number, the fractional part will be truncated. Likewise, when the result of a binary, pental, octal, or hexadecimal calculation includes a fractional part, the fractional part will be truncated. In the binary, pental, octal, and hexadecimal systems, negative numbers are displayed as a complement.

SPECIFICATIONS

Scientific calculations, statistical calculations, etc. Internal calculations: Mantissas of up to 14 digits Pending operations: 24 calculations 10 numeric values (5 numeric values in STAT mode) Power source: [EL-509W/531W] 3V (DC): Alkaline batteries (LR44 or equivalent) 2 [EL-531WG] Built-in solar cells 3 V (DC): Backup batteries (Alkaline batteries (LR44 or equivalent) 2) [EL-531WH] 1.5V (DC): Heavy duty manganese battery (size AA or R6) 1 Power consumption: [EL-509W/531W] 0.0002 W [EL-531WH] 0.0001 W Operating time: [EL-509W/531W] Approx. 5000 hours [EL-531WH] Approx. 17000 hours when continuously displaying 55555. at 25C (77F). Varies according to use and other factors. Operating temperature: 0C 40C (32F 104F) External dimensions: [EL-509W/531W/531WG] 79.6 mm (W) 154.5 mm (D) 13.2 mm (H) 3-1/8 (W) 6-3/32 (D) 17/32 (H) [EL-531WH] 79.6 mm (W) 154.5 mm (D) 18.2 mm (H) 3-1/8 (W) 6-3/32 (D) 23/32 (H) Weight: [EL-509W/531W] Approx. 95 g (0.21 lb) (Including batteries) [EL-531WG] Approx. 97 g (0.22 lb) (Including batteries) [EL-531WH] Approx. 110 g (0.25 lb) (Including battery) Accessories: [EL-509W/531W/531WG] Batteries 2 (installed), operation manual, quick reference card and hard case [EL-531WH] Battery 1 (installed), operation manual, quick reference card and hard case Calculations:

Calculation Ranges

Within the ranges specified, this calculator is accurate to 1 of the least significant digit of the mantissa. However, a calculation error increases in continuous calculations due to accumulation of each calculation error. (This is the same for yx, x , n!, ex, ln, etc., where continuous calculations are performed internally.) Additionally, a calculation error will accumulate and become larger in the vicinity of inflection points and singular points of functions. Calculation ranges 1099 ~ 9.9999999991099 and 0. If the absolute value of an entry or a final or intermediate result of a calculation is less than 1099, the value is considered to be 0 in calculations and in the display.
Time, Decimal and Sexagesimal Calculations
Conversion between decimal and sexagesimal numbers can be performed. In addition, the four basic arithmetic operations and memory calculations can be carried out using the sexagesimal system. Notation for sexagesimal is as follows:
Use K and R to perform a STAT variable calculation.
Data Entry and Correction
Entered data are kept in memory until @c are pressed or mode selection. Before entering new data, clear the memory contents. [Data Entry] Single-variable data Data k Data & frequency k (To enter multiples of the same data) Two-variable data Data x & Data y k Data x & Data y & frequency k (To enter multiples of the same data x and y.) Up to 100 data items can be entered. With the single-variable data, a data item without frequency assignment is counted as one data item, while an item assigned with frequency is stored as a set of two data items. With the two-variable data, a set of data items without frequency assignment is counted as two data items, while a set of items assigned with frequency is stored as a set of three data items. [Data Correction] Correction prior to pressing k immediately after a data entry: Delete incorrect data with , then enter the correct data. Correction after pressing k: Use [] to display the data previously entered. Press ] to display data items in ascending (oldest first) order. To reverse the display order to descending (latest first), press the [ key. Each item is displayed with Xn=, Yn=, or Nn= (n is the sequential number of the data set). Display the data item to modify, input the correct value, then press k. Using &, you can correct the values of the data set all at once. or appears, more data items can be browsed by When pressing [ or ]. To delete a data set, display an item of the data set to delete, then press @J. The data set will be deleted. To add a new data set, press and input the values, then press k.

degree minute

second

Coordinate Conversions

Before performing a calculation, select the angular unit.
Y y 0 x X P (x,y) Y P (r, )

BATTERY REPLACEMENT Notes on Battery Replacement
Improper handling of batteries can cause electrolyte leakage or explosion. Be sure to observe the following handling rules: Replace both batteries at the same time. Do not mix new and old batteries. Make sure the new batteries are the correct type. When installing, orient each battery properly as indicated in the calculator. Batteries are factory-installed before shipment, and may be exhausted before they reach the service life stated in the specifications. Notes on erasure of memory contents When the battery is replaced, the memory contents are erased. Erasure can also occur if the calculator is defective or when it is repaired. Make a note of all important memory contents in case accidental erasure occurs.

Rectangular coord.

Polar coord.
The calculation result is automatically stored in memories X and Y. Value of r or x: X memory Value of or y: Y memory

Modify Function

In this calculator, calculation results are internally obtained in scientific notation with up to 14 digits for the mantissa. However, since calculation results are displayed in the form designated by the display notation and the number of decimal places indicated, the internal calculation result may differ from that shown in the display. By using the modify function, the internal value is converted to match that of the display, so that the displayed value can be used without change in subsequent operations.
When to Replace the Batteries
[EL-509W/531W/531WH] If the display has poor contrast, the batteries require replacement. [EL-531WG] If the display has poor contrast or nothing appears on the display even when is pressed in dim lighting, it is time to replace the batteries.

STATISTICAL CALCULATIONS

Statistical calculations are performed in the statistics mode. Press m1 to select the statistics mode. This calculator performs the seven statistical calculations indicated below. After selecting the statistics mode, select the desired sub-mode by pressing the number key corresponding to your choice. When changing to the statistical sub-mode, press the corresponding number key after performing the operation to select the statistics mode (press m1).

Cautions

Fluid from a leaking battery accidentally entering an eye could result in serious injury. Should this occur, wash with clean water and immediately consult a doctor. Should fluid from a leaking battery come in contact with your skin or clothes, immediately wash with clean water. If the product is not to be used for some time, to avoid damage to the unit from leaking batteries, remove them and store in a safe place. Do not leave exhausted batteries inside the product.
FOR MORE INFORMATION ABOUT SCIENTIFIC CALCULATOR
Visit our Web site. http://sharp-world.com/calculator/

SHARP CORPORATION

EL-509W/531W(G/H) _ENGLISH_1

9 0. , 9 0. , 9 0. ,

EL-509W EL-531W EL-531WG EL-531WH

sutSUTVGhH IleL$ #!qQ%

sin60[]=

cos[rad]= 4

KRO;:?
A=56 B=68 A2+B4= 56 OA 68 OB KA/ 2 + KB* 4 = 8 * 2 OM 24 /KM= KM* 5 = OM 150 * 3 ; 250 ; RM*5@% @:RM 110 OY 26510 /RY= 2750 *RY= 3 OY VKYL=
56. 68. 300. 16. 1.5 80. 0. 450. 250. 35. 665. 110. 241. 302500. 3. 28.27433388
DEC(25)BIN HEX(1AC) BIN PEN OCT DEC BIN(1010100) 11 = BIN(111)NEG HEX(1FF)+ OCT(512)= HEX(?) 2FEC 2C9E=(A) +)2000 1901=(B) (C) 1011 AND 101 = (BIN) @ 25 @ @ 1AC @ @ @ @
s 60 = Gu (V/ 4 )= G@T 1 = G

0.866025403

0.707106781 50.

24(82)= (82)5=

tan11=[g]

110101100 b 3203 P 428.

(cosh 1.5 + sinh 1.5)2 = 5 tanh1 = 7 ln 20 = log 50 = e3 = 101.7 = 1+ 1 = 52 =

4 (123)= 1

(hu 1.5 +h s 1.5 )L= 20.08553692 @Ht( 5 / 7 )= I 20 = l 50 = @e 3 = @ 1.7 = 6 @+ 7 @ = 82-* 5 L= 4 @= 8= 49 - 4 @$ 81 = @# 27 = 4 @!= 10 @q 3 = 5 @Q 2 = 500 * 25 @% 120 / 400 @%
0.895879734 2.995732274 1.698970004 20.08553692 50.11872336
$1503:M1 +)$250:M2 =M1+250 )M25% M $1= 110 26,510=$? $2,750=? r = 3cm r2 = ? (r Y) 24 = 2.4.(A) 4+6 3(A)+60(A)=
@( 1010 - 100 ) * 11 = 111 = @ 1FF @+ 512 = @ OM@ 2FEC 2C9E ; ; RM @ =

1111111001

1511 349

34E 6FF A4d

0.309523809 2024.984375
24 /( 4 + 6 ) = 3 *K?+ 60 / K?=

2.4 32.2

1 db 1111101001
5A OR C3 = (HEX) @ 5A C3 = NOT 10110 = (BIN) @ 10110 =

6.447419591 512.

83 = =
24 XOR 4 = (OCT) @ = B3 XNOR 2D = (HEX) DEC @ B3 2D = @
4. 3. 24. 720. 10. 125. 30. 625. 280.
82=ANS ANS2 44+37=ANS ANS= 8*2= L= 44 + 37 = = 6+4=ANS ANS+5 6+4= +5=

10. 15. 16. 256. 81. 9.

FFFFFFFF61 H 159.

10P3 = 5C2

50025%= 120400=?%
123918.05 [10] 123.678 [60] 3h30m45s + 6h45m36s = [60] 12 o 39 o 18.05 @_ 12.65501389 123.678 @_
500+(50025%)= 500 + 25 @% 400(40030%)= 400 - 30 @%

123 4040.8

13(5+2)= 235+2= 335+32= 3 ( 5 + 2 )= 3*5+2= 3*5+3*2= @[ ] ] [
21. 17. 21. 21. 17. 21. 17.

+-*/()E

DISPLAY

ENGLISH

Symbol

SCIENTIFIC CALCULATOR
EL-W531 EL-W531G EL-W531H EL-W531HA EL-W535

Dot matrix display

Mantissa

Exponent

Memory clear key Press @ P to display the menu. To initialize the display settings, press 0. The parameters set as follows: Angular unit: DEG Display notation: NORM1 N-base: DEC To clear all variables and memories (AF, M, X, Y, D1D4, ANS, and STAT) at once, press 1 0. To RESET the calculator, press 2 0. The RESET operation will erase all data stored in memory and restore the calculators default settings.
Equations that have one result require an additional eleven characters worth of memory to store in order to hold the result. In addition to the amount of memory needed to store an equation, the WriteView editor will require a certain amount for the sake of display. Equations also include calculation ending instructions, such as =.

Functions

Priority Levels in Calculation
This calculator performs operations according to the following priority: Functions preceded by their argument Fractions (1m4, etc.) (x 1, x 2, n!, etc.) y x, xr Implied multiplication of a memory value (2Y, etc.) Functions followed by their argument (sin, cos, 1 etc.) Implied multiplication of a function (2sin 30, A , etc.) 4 nCr, nPr , +, AND OR, XOR, XNOR =, M+, M, M, DEG, RAD, GRAD, DATA, CD, r , xy, and other calculation ending instructions If parentheses are used, parenthesized calculations have precedence over any other calculations.
Refer to the calculation examples for each function. In the Line editor, the following symbols are used: : to indicate an expressions power. (m, @ ", @ Y) : to separate integers, numerators, and denominators. (W, @ k) When using @ O or @ W in the Line editor, values are entered in the following way: logn (base, value) abs value

OPERATION MANUAL

PRINTED IN CHINA / IMPRIM EN CHINE / IMPRESO EN CHINA 07BGK (TINSE1278EHZZ)

INTRODUCTION

Thank you for purchasing the SHARP Scientic Calculator Model EL-W531/W531G/W531H/W531HA/W535. About the calculation examples (including some formulas and tables), refer to the reverse side of this English manual. Refer to the number on the right of each title in the manual for use. After reading this manual, store it in a convenient location for future reference. Notes: Some of the models described in this manual may not be available in some countries. This product uses a period as a decimal point.
During actual use, not all symbols are displayed at the same time. Only the symbols required for the usage under instruction are shown in the display and calculation examples of this manual. Indicates that some contents are hidden in the / : / directions shown. 2ndF: Appears when @ is pressed, indicating that the functions shown in orange are enabled. HYP: Indicates that H has been pressed and the hyperbolic functions are enabled. If @ > is pressed, the symbols 2ndF HYP appear, indicating that inverse hyperbolic functions are enabled. ALPHA: Indicates that ;, x or t has been pressed, and entry (recall) of memory contents and recall of statistics can be performed. DEG/RAD/GRAD: Indicates angular units. BUSY: Appears during the execution of a calculation. W-VIEW: Indicates that the WriteView editor is selected. M: Indicates that a numerical value is stored in the independent memory (M). ENG/SCI/FIX/N2/N1: Indicates the notation used to display a value and changes by SET UP menu. N1 is displayed on-screen as NORM1, and N2 as NORM2.

Random Function

The random function has four settings. (This function cannot be selected while using the N-base function.) To generate further random numbers in succession, press e. Press j to exit. Random numbers A pseudo-random number, with three signicant digits from 0 up to 0.999, can be generated by pressing @ w 0 e. Note: In the WriteView editor, the result will be a fraction or 0. Random dice To simulate a die-rolling, a random integer between 1 and 6 can be generated by pressing @ w 1 e. Random coin To simulate a coin ip, 0 (heads) or 1 (tails) can be randomly generated by pressing @ w 2 e. Random integer An integer between 0 and 99 can be generated randomly by pressing @ w 3 e.
ENTERING, DISPLAYING, AND EDITING THE EQUATION The WriteView Editor
Entry and display In the WriteView editor, you can enter and display fractions or certain functions as you would write them. Notes: The WriteView editor can only be used in NORMAL mode. If the equation grows too large, it may extend off the edge of the display after you obtain the result. If you want to see the entire equation, press l or r to return to the editing screen. Displaying calculation results When possible, calculation results will be displayed using fractions, r, and. When you press U, the display will cycle through the following display styles: improper fractions (with Mixed fractions (with or without ) decimal numbers or without ) decimal numbers Proper fractions (with or without ) Irrational numbers (square roots, fractions made using square roots) decimal numbers Notes: In the following cases, calculation results may be displayed using r: Arithmetic operations and memory calculations Trigonometric calculations In trigonometric calculations, when Entry value entering values such as those in multiples of 15 the table to the right, results may be DEG 1 shown using r. RAD multiples of 12 Calculation results may extend off 50 GRAD multiples of 3 the edges of the screen. You can see those parts by pressing l or r (depending on whether the left or right portion is hidden). Improper/proper fractions will be converted to and displayed as decimal numbers if the number of digits used in their expression is greater than nine. In the case of mixed fractions, the maximum number of displayable digits (including integers) is eight. If the number of digits in the denominator of a fractional result that uses is greater than three, the result is converted to and displayed as a decimal number.

INITIAL SET UP Mode Selection
NORMAL mode: b 0 (default) Used to perform arithmetic operations and function calculations. STAT mode: b 1 Used to perform statistical operations. DRILL mode: b 2 Used to practice math and multiplication table drills.

SET UP Menu

Press J to display the SET UP menu. Press j to exit the SET UP menu. Determination of the angular unit The following three angular units (degrees, radians, and grads) can be specied. DEG (): J (default) RAD (rad): J GRAD (g): J 0 2
3 Selecting the display notation and decimal places Five display notation systems are used to display calculation results: Two settings of Floating point (NORM1 and NORM2), Fixed decimal point (FIX), Scientic notation (SCI), and Engineering notation (ENG). When J (FIX) or J (ENG) is pressed, TAB(09)? will be displayed and the number of decimal places (TAB) can be set to any value between 0 and 9. When J (SCI) is pressed, SIG(09)? will be displayed and the number of signicant digits can be set to any value between 0 and 9. Entering 0 will set a 10-digit display.

Angular Unit Conversions

Each time @ ] is pressed, the angular unit changes in sequence.

Operational Notes

Do not carry the calculator around in your back pocket, as it may break when you sit down. The display is made of glass and is particularly fragile. Keep the calculator away from extreme heat such as on a car dashboard or near a heater, and avoid exposing it to excessively humid or dusty environments. Since this product is not waterproof, do not use it or store it where uids, for example water, can splash onto it. Raindrops, water spray, juice, coffee, steam, perspiration, etc. will also cause malfunction. Clean with a soft, dry cloth. Do not use solvents or a wet cloth. Do not drop it or apply excessive force. Never dispose of batteries in a re. Keep batteries out of the reach of children. This product, including accessories, may change due to upgrading without prior notice.

Memory Calculations

BEFORE USING THE CALCULATOR
When using for the rst time, press the RESET switch (on the back), with the tip of a ball-point pen or similar object.
Adjusting the Display Contrast
Press J 3, then + or & to adjust the contrast. Press j to exit.
Memory calculations can be performed in NORMAL and STAT modes. Temporary memories (AF, X and Y) Press x and a variable key to store a value in memory. Press t and a variable key to recall the value from that memory. To place a variable in an equation, press ; and a variable key. Independent memory (M) In addition to all the features of temporary memories, a value can be added to or subtracted from an existing memory value. Press j x M to clear the independent memory (M). Last answer memory (ANS) The calculation result obtained by pressing = or any other calculation ending instruction is automatically stored in the last answer memory. Notes: Calculation results from the functions indicated below are automatically stored in the X or Y memories replacing any existing values. r , xy: X memory (r or x), Y memory ( or y) Two x values from a quadratic regression calculation in STAT mode: X memory (1:), Y memory (2:) Use of t or ; will recall the value stored in memory using up to 14 digits. Denable memories (D1D4) You can store functions or operations in denable memories (D1D4). To store a function or operation, press x, followed by a denable memory key (I, J, K, or L), followed by the operation you want to store. Menu-related operations, such as J, cannot be stored. Press j to return to the previous display. To call a stored function or operation, press the corresponding memory key. Calling a stored function will do nothing if the function that is called would be unusable in the current context. Any functions or operations that are stored in a denable memory will be replaced when you save a new one into that memory. When displaying and correcting a data set in STAT mode, you cannot store functions or operations in denable memories.

Power On and Off

Press j to turn the calculator on. The data that was onscreen when the power was turned off will appear on the display. Press @ o to turn it off.
Key Notations Used in this Manual
In this manual, key operations are described as follows: To specify e x: @ " To specify ln: i To specify E: ; E Functions that are printed in orange above the key require @ to be pressed rst before the key. When you specify the memory, press ; rst. Numbers for input values are not shown as keys, but as ordinary numbers. Functions that are printed in gray adjacent to the keys are effective in specic modes.

NOTICE

SHARP strongly recommends that separate permanent written records be kept of all important data. Data may be lost or altered in virtually any electronic memory product under certain circumstances. Therefore, SHARP assumes no responsibility for data lost or otherwise rendered unusable whether as a result of improper use, repairs, defects, battery replacement, use after the specied battery life has expired, or any other cause. SHARP will not be liable nor responsible for any incidental or consequential economic or property damage caused by misuse and/or malfunctions of this product and its peripherals, unless such liability is acknowledged by law. Press the RESET switch (on the back), with the tip of a ball-point pen or similar object, only in the following cases. Do not use an object with a breakable or sharp tip. Note that pressing the RESET switch erases all data stored in memory. When using for the rst time After replacing the battery To clear all memory contents When an abnormal condition occurs and all keys are inoperative If service should be required on this calculator, use only a SHARP servicing dealer, SHARP approved service facility, or SHARP repair service where available.

The Line Editor

Entry and display In the Line editor, you can enter and display equations line by line. Notes: Up to three lines of text may be viewed on the screen at one time. If the length of the equation exceeds three lines, parts of it may be hidden from view after calculation. If you want to see the rest of the equation, press l or r to return to the editing screen. In the Line editor, calculation results are displayed in decimal form.
Setting the oating point number system in scientic notation Two settings are used to display a oating-point number: NORM1 (the default) and NORM2. A number is automatically displayed in scientic notation outside a preset range: NORM1 (J 1 3): 0.000000001 | x | 9,999,999,999 NORM2 (J 1 4): 0.01 | x | 9,999,999,999 Selecting the editor Two editors are available in NORMAL mode: The WriteView editor (W-VIEW): J (default) The Line editor (LINE): J Adjusting the display contrast Press J 3, then + or & to adjust the contrast. Press j to exit. Insert and overwrite entry methods When using the Line editor, you can change the entry method from INSERT (the default) to OVERWRITE. After you switch to the overwrite method (by pressing J 4 1), the triangular cursor will change to a rectangular one, and the number or function underneath it will be overwritten as you make entries.

The previous calculation result can be used in the subsequent calculation. However, it cannot be recalled after entering multiple instructions.

Constant Calculations

Fraction Calculations
In constant calculations, the addend becomes a constant. Subtraction and division are performed in the same manner. For multiplication, the multiplicand becomes a constant. In constant calculations, constants will be displayed as K.
Arithmetic operations and memory calculations can be performed using fractions. In NORMAL mode, conversion between a decimal number and a fraction can be performed by pressing U. Notes: Improper/proper fractions will be converted to and displayed as decimal numbers if the number of digits used in their expression is greater than nine. In the case of mixed fractions, the maximum number of displayable digits (including integers) is eight. To convert a sexagesimal value to a fraction, rst convert it by pressing @ :.
Binary, Pental, Octal, Decimal, and Hexadecimal 11 Operations (N-base)
Conversions can be performed between N-base numbers in NORMAL mode. The four basic arithmetic operations, calculations with parentheses, and memory calculations can also be performed, along with the logical operations AND, OR, NOT, NEG, XOR, and XNOR on binary, pental, octal, and hexadecimal numbers. Conversion to each system is performed with the following keys: @ z (BIN appears), @ r (PEN appears), @ g (OCT appears), @ h (HEX appears), @ / (BIN, PEN, OCT, and HEX disappear) Note: The hexadecimal numbers AF are entered by pressing m , * , A , l , i , and H. In the binary, pental, octal, and hexadecimal systems, fractional parts cannot be entered. When a decimal number having a fractional part is converted into a binary, pental, octal, or hexadecimal number, the fractional part will be truncated. Likewise, when the result of a binary, pental, octal, or hexadecimal calculation includes a fractional part, the fractional part will be truncated. In the binary, pental, octal, and hexadecimal systems, negative numbers are displayed as a complement.

A B C D E F

Mean of samples (x data) Sample standard deviation (x data) Population standard deviation (x data) Number of samples Sum of samples (x data)

DRILL MODE

Math Drill: b Math operation questions with positive integers and 0 are displayed randomly. It is possible to select the number of questions and operator type. Multiplication Table ( Table): b Questions from each row of the multiplication table (1 to 12) are displayed serially or randomly. To exit DRILL mode, press b and select another mode.
Error codes and error types ERROR 01: Syntax error An attempt was made to perform an invalid operation. Ex. 2 + & 5 = ERROR 02: Calculation error The absolute value of an intermediate or nal calculation result equals or exceeds 10100. An attempt was made to divide by zero (or an intermediate calculation resulted in zero). The calculation ranges were exceeded while performing calculations. ERROR 03: Nesting error The available number of buffers was exceeded. (There are 10 buffers for numeric values and 64 buffers for calculation instructions). ERROR 04: Data over Data items exceeded 100 in STAT mode.
If the product is not to be used for some time, to avoid damage to the unit from a leaking battery, remove it and store in a safe place. Do not leave an exhausted battery inside the product. Keep batteries out of the reach of children. An exhausted battery left in the calculator may leak and damage the calculator. Explosion risk may be caused by incorrect handling. Do not throw batteries into a re as they may explode.
Sum of squares of samples (x data) Mean of samples ( y data) Sample standard deviation ( y data) Population standard deviation ( y data) Sum of samples ( y data)

Replacement Procedure

1. Turn the power off by pressing @ o. 2. Remove the two screws. (Fig. 1) 3. Slide the battery cover slightly and lift it to remove. 4. EL-W531/W531G/W535: Remove the used battery by prying it out with a ball-point pen or other similar pointed device. (Fig. 2) EL-W531H/W531HA: Remove the used battery. 5. EL-W531/W531G/W535: Install one new battery. Make sure the + side is facing up. EL-W531H/W531HA: Install one new battery. First insert the side toward the spring. (Fig. 3) 6. Replace the cover and screws. 7. Press the RESET switch (on the back) with the tip of a ball-point pen or similar object. 8. Adjust the display contrast. See Adjusting the Display Contrast. Make sure that the display appears as shown below. If the display does not appear as shown, remove the battery, reinstall it, and check the display once again.

Using Math Drill and Table
1. Press b for Math Drill or b for Table. 2. Math Drill: Use u and d to select the number of questions (25, 50, or 100). Table: Use u and d to select a row in the multiplication table (1 to 12). 3. Math Drill: Use l and r to select the operator type for questions (+, , , , or +). Table: Use l and r to select the order type (Serial or Random). 4. Press e to start. When using Math Drill or Table (random order only), questions are randomly selected and will not repeat except by chance. 5. Enter your answer. Press j or N to clear the entered number and then enter the correct answer. 6. Press e. If the answer is correct, appears and the next question is displayed. If the answer is wrong, appears and the same question is displayed. This will be regarded as an incorrect answer. If you press e without entering an answer, the correct answer is displayed and then the next question is displayed. This will be regarded as an incorrect answer. 7. Continue answering the series of questions by entering the answer and pressing e. 8. After you nish, press e and the number and percentage of correct answers are displayed. 9. Press e to return to the initial screen for your current drill. Math Drill sample
Current question/ Total questions Question
Sum of squares of samples ( y data) Sum of products of samples (x, y) Correlation coefcient Coefcient of regression equation Coefcient of regression equation Coefcient of quadratic regression equation

Alert Messages

Cannot delete! The selected item cannot be deleted by pressing N or @ y in the WriteView editor. Ex. * 5 r A l N In this example, delete the exponent before attempting to delete the parentheses.
Time, Decimal, and Sexagesimal Calculations
Conversion between decimal and sexagesimal numbers can be performed. In addition, the four basic arithmetic operations and memory calculations can be performed using the sexagesimal system. Notation for sexagesimal is as follows:
Use ; and t to perform a variable calculation in STAT mode. U does not function in STAT mode.

Degree

Minute

Second

Data Entry and Correction
Before entering new data, clear the memory contents.
Cannot call! The function or operation stored in denable memory (D1 to D4) cannot be called. Ex. An attempt was made to recall a statistical variable from within NORMAL mode. Buffer full! The equation (including any calculation ending instructions) exceeded its maximum input buffer (159 characters in the WriteView editor or 161 characters in the Line editor). An equation may not exceed its maximum input buffer.

Coordinate Conversions

Before performing a calculation, select the angular unit. The calculation result is automatically stored in the X and Y memories (r or x in X memory, and or y in Y memory). The results of coordinate conversions will be displayed as decimal numbers even in the WriteView editor.

Rectangular coord.

Polar coord.

Modify Function

Decimal calculation results are internally obtained in scientic notation, with up to 14 digits in the mantissa. However, since calculation results are displayed in the form designated by the display notation and the number of decimal places indicated, the internal calculation result may differ from that shown in the display. By using the modify function (@ n), the internal value is converted to match that of the display, so that the displayed value can be used without change in subsequent operations. When using the WriteView editor, if the calculation result is displayed using fractions or irrational numbers, press U to convert it to decimal form rst.
Data entry Single-variable data Data _ Data H frequency _ (To enter multiples of the same data) Two-variable data Data x H data y _ Data x H data y H frequency _ (To enter multiples of the same data x and y) Note: Up to 100 data items can be entered. With the singlevariable data, a data item without frequency assignment is counted as one data item, while an item assigned with frequency is stored as a set of two data items. With the two-variable data, a set of data items without frequency assignment is counted as two data items, while a set of items assigned with frequency is stored as a set of three data items. Data correction Correction before pressing _ immediately after a data entry: Delete incorrect data with j, then enter the correct data. Correction after pressing _: Use u and d to display the previously entered data set. Press d to display the data set in ascending (oldest rst) order. To reverse the display order to descending (latest rst), press the u key. Press @ u or @ d to jump the cursor to the beginning or end of the data set. Each data set is displayed with X:, Y:, or F:.

Fig. 1

Fig. 2

Fig. 3

Calculation Ranges

See step 6 above.

Within the ranges specied, this calculator is accurate to 1 of the 10th digit of the mantissa. However, a calculation error increases in continuous calculations due to accumulation of each calculation error. (This is the same for y x, xr, n!, e x, ln, etc., where continuous calculations are performed internally.) Additionally, a calculation error will accumulate and become larger in the vicinity of inection points and singular points of functions. Calculation ranges 1099 to 9.and 0. If the absolute value of an entry or a nal or intermediate result of a calculation is less than 1099, the value is considered to be 0 in calculations and in the display. Display of results using r Calculation results may be displayed using r when all of the following conditions are met: When intermediate and nal calculation results are displayed in the following form: P P a eb c d f When each coefcient falls into the following ranges: 1 a < 100; 1 < b < 1,000; 0 c < 100; 1 d < 1,000; 1 e < 100; 1 f < 100 When the number of terms in the intermediate and nal calculation results is one or two. Note: The result of two fractional terms that include r will be reduced to a common denominator.

Automatic Power Off Function
This calculator will turn itself off to save battery power if no key is pressed for approximately 10 minutes.

SPECIFICATIONS

Calculation features: Scientic calculations, statistical calculations, etc. Drill features: Math Drill and Multiplication Table Display: dot matrix liquid crystal display Display of calculation results: Mantissa: 10 digits Exponent: 2 digits Internal calculations: Mantissas of up to 14 digits Pending operations: 64 calculations 10 numeric values Power source: EL-W531/W535 1.5 V (DC): Alkaline battery (LR44 or equivalent) 1 EL-W531G Built-in solar cells 1.5 V (DC): Backup battery (Alkaline battery (LR44 or equivalent) 1) EL-W531H/W531HA 1.5 V (DC): Heavy duty manganese battery (size AAA or R03) 1 Power consumption: EL-W531/W531H/W531HA/W535 0.00011 W Operating time: EL-W531/W535 (varies according to Approx. 3,000 hours when continuously use and other factors) displaying 55555. at 25C (77F) EL-W531G Approx. 3,000 hours when continuously displaying 55555. at 25C (77F), using the alkaline battery only EL-W531H/W531HA Approx. 17,000 hours when continuously displaying 55555. at 25C (77F) Operating temperature: 0C40C (32F104F) External dimensions: 79.6 mm (W) 161.5 mm (D) 15.5 mm (H) 3-1/8 (W) 6-11/32 (D) 5/8 (H) Weight: EL-W531/W535 Approx. 100 g (0.22 lb) (including battery) EL-W531G Approx. 102 g (0.23 lb) (including battery) EL-W531H/W531HA Approx. 107 g (0.24 lb) (including battery) Accessories: Battery 1 (installed), operation manual, and hard case
Number of questions Operator type Percentage correct Correct answers

STATISTICAL CALCULATIONS

Statistical calculations can be performed in STAT mode. There are eight sub-modes within STAT mode. Press b 1, then press the number key that corresponds to your choice: 0 (S#a# 0 [SD]): Single-variable statistics 1 (S#a# 1 [LINE]): Linear regression 2 (S#a# 2 [QUAD]): Quadratic regression 3 (S#a# 3 [E_EXP]): Euler exponential regression 4 (S#a# 4 [LOG]): Logarithmic regression 5 (S#a# 5 [POWER]): Power regression 6 (S#a# 6 [INV]): Inverse regression 7 (S#a# 7 [G_EXP]): General exponential regression

Table sample

Data set number Data x Frequency Total remaining questions Question Data set number Data x Data y Frequency
Statistical Calculations and Variables
The following statistics can be obtained for each statistical calculation (refer to the table below): Single-variable statistical calculation Statistics of Linear regression calculation Statistics of and. In addition, the estimate of y for a given x (estimate y) and the estimate of x for a given y (estimate x).

Display and move the cursor to the data item to be modied by using u and d, input the correct value, then press _ or e. To delete a data set, display and move the cursor to an item of the data set to delete by using u and d, then press @ #. The data set will be deleted. To add a new data set, press j to exit the display of previously entered data and input the values, then press _.
BATTERY REPLACEMENT Notes on Battery Replacement
Improper handling of batteries can cause electrolyte leakage or explosion. Be sure to observe the following handling rules: Make sure the new battery is the correct type. When installing, orient the battery properly as indicated in the calculator. The battery is factory-installed before shipment, and may be exhausted before it reaches the service life stated in the specications. Notes on erasure of memory contents When the battery is replaced, the memory contents are erased. Erasure can also occur if the calculator is defective or when it is repaired. Make a note of all important memory contents in case accidental erasure occurs.
Multiplicand Order type Percentage correct Correct answers
Statistical Calculation Formulas
Type Linear Quadratic Euler exponential Logarithmic Power Inverse General exponential Regression formula
Ranges of Math Drill Questions
The range of questions for each operator type is as follows. + Addition operator: 0 + 0 to 20 + 20 ] Subtraction operator: to 20 20; answers are positive integers and 0. > Multiplication operator: or to ) Division operator: to 144 12; answers are positive integers from 1 to 12 and 0, dividends of up to 144, and divisors of up to 12. +]>) Mixed operators: Questions within all the above ranges are displayed.
y = a + bx y = a + bx + cx 2 y = a ebx y = a + b ln x y = a xb

1 y=a+b x

Quadratic regression calculation Statistics of and , and coefcients a, b, c in the quadratic regression formula ( y = a + bx + cx 2). (For quadratic regression calculations, no correlation coefcient (r) can be obtained.) When there are two x values, each value will be displayed with 1: or 2:, and stored separately in the X and Y memories. Euler exponential regression, logarithmic regression, power regression, inverse regression, and general exponential regression calculations Statistics of and. In addition, the estimate of y for a given x and the estimate of x for a given y. (Since the calculator converts each formula into a linear regression formula before actual calculation takes place, it obtains all statistics, except coefcients a and b, from converted data rather than entered data.)
When to Replace the Battery
EL-W531/W531H/W531HA/W535: If the display has poor contrast even after adjusting the display contrast, the battery requires replacement. EL-W531G: If the display has poor contrast or nothing appears on the display when j is pressed in dim lighting, even after adjusting the display contrast, it is time to replace the battery.

y = a bx

ERRORS AND CALCULATION RANGES Errors
An error will occur if an operation exceeds the calculation ranges, or if a mathematically illegal operation is attempted. When an error occurs, pressing l or r automatically moves the cursor back to the place in the equation where the error occurred. Edit the equation or press j to clear the equation.
FOR MORE INFORMATION ABOUT SCIENTIFIC CALCULATORS
Visit our Web site. http://sharp-world.com/calculator/
An error will occur when: The absolute value of the intermediate result or calculation result is equal to or greater than 1 10100. The denominator is zero. An attempt is made to take the square root of a negative number. No solution exists in the quadratic regression calculation.

Cautions

Fluid from a leaking battery accidentally entering an eye could result in serious injury. Should this occur, wash with clean water and immediately consult a doctor. Should uid from a leaking battery come in contact with your skin or clothes, immediately wash with clean water.
o = [NORM1] [NORM2] j 3 z 1000 = J14 J13 0.003 3.b-03 0.003
(123) = 4 o 83 = p 4p = o 140. 3

-90 3p

( 12 m 3 r)m 1W4=

0 6.447419591

jxM 150 k 3 m Mm tMk5@a @M tM Y) 110 x Y 26510 z t Y = 2750 k t Y = Y) 3xY s;Y A=U

0. 450. 250.

2 1.25 + = 1.25 + 2 W 5 = 5 U U
( 12 m 3 ) m 1 W 4 = 6.447419591 8@1= * 49 r & 4 @ D 81 = * 49 & 4 @ D 81 = @ q 27 = 4@B= 512. 4. 4. 3. 24. 720. 10. 125. 30. 625. 280. 4. 4.
+) $250: M1 + 250 ) M2 5%
M= $1 = 110 (110 26,510 = $? $2,750 = ? r = 3 cm (r
CALCULATION EXAMPLES ANWENDUNGSBEISPIELE EXEMPLES DE CALCUL EJEMPLOS DE CLCULO EXEMPLOS DE CLCULO ESEMPI DI CALCOLO REKENVOORBEELDEN PLDASZMTSOK PKLADY VPOT RKNEEXEMPEL LASKENTAESIMERKKEJ UDREGNINGSEKSEMPLER

1.65 1.65 1m13m20 33m20

[NORM1] 4

35. 665. 110. 241.

1.25 + 2 W 5 = U U

+&kz()S`

j 45 + 285 z 3 = ( 18 + 6 ) z (15 & 8 = 42 k S 5 + 120 =

45 + = 18 + 6 = + 120 =

10P3 5C2

302'500. 3.

5 * 4m5m6 = 11
10 @ e 3 = 5@c2= 500 k 25 @ a 120 z 400 @ a
(5 103) (4 103) = 5 ` 3 z 4 `S3= + 57 = 45 + 57 = = = 34 + 57 = 45 = 68 k 25 = 40 =

1'250'000.

r 2 = ?
4 + 6 = 5 (A) 3 (A) + 60 (A) = sinh1 D1 24

28.32

zrgh/dn4 pxC
BIN j@/ 25 @ z @ h 1AC @z @r @g @/ @z( 1010 & 100) k 11 = NEG d 111 = @ h 1FF @g+ 512 = @h BIN PEN OCT 654 428. BIN 11001
500 25% = 91. 102. 1'700. 2'720. = ?%
24 z ( 4 + 6 )= 3 k ; < + 60 z;<= xI@>v
DEC (25) HEX (1AC) BIN PEN
500 + (500 25%) = 500 + 25 @ a 400 (400 30%) = 400 & 30 @ a

OPMERKING: ALLEEN VOOR NEDERLAND/ NOTE: FOR NETHERLANDS ONLY

< 10

0 r n 9999999999* 0 r 69

< 10100

DEG, DMS
000.00001 | x | < 10000

x 2 + y 2 < 10100

0 r < 10100 DEG: | | < 1010 RAD: | | < GRAD: | | < DEG
1.050261097 1.826044386 0.995176343 8.541216597 15.67223812 6.528394256
* Jumlah memori yang digunakan untuk kepentingan tampilan dalam editor WriteView, diukur dalam jumlah karakter (tidak termasuk nilai yang dimasukkan, ditunjukkan dalam diagram dengan )
DRG DEC BIN PEN OCT HEX AND OR XOR XNOR

r= sx = sy = x=3 y = 46

r= sx = sy =
RAD, GRAD DEG: | x | < 10100 GRAD: | x | < 1098 2

y = ? 3 @ U x = ? 46 @ V

46 x 24.61590706
DEC: | x | 9999999999 BIN: 1000000000 x x 111111111 PEN: 2222222223 x x 2222222222 OCT: 4000000000 x x 3777777777 HEX: FDABF41C01 x FFFFFFFFFF 0 x 2540BE3FF
A. Information on Disposal for Users (private households) 1. In the European Union Attention: If you want to dispose of this equipment, please do not use the ordinary dust bin! Used electrical and electronic equipment must be treated separately and in accordance Attention: Your product with legislation that requires proper treatment, recovery and recycling of used electrical and electronic equipment. is marked with this Following the implementation by member states, private households within the EU states symbol. It means that may return their used electrical and electronic equipment to designated collection facilities used electrical and free of charge*. In some countries* your local retailer may also take back your old product electronic products free of charge if you purchase a similar new one. should not be mixed with general household *) Please contact your local authority for further details. waste. There is a If your used electrical or electronic equipment has batteries or accumulators, please separate collection dispose of these separately beforehand according to local requirements. system for these By disposing of this product correctly you will help ensure that the waste undergoes the products. necessary treatment, recovery and recycling and thus prevent potential negative effects on the environment and human health which could otherwise arise due to inappropriate waste handling. 2. In other Countries outside the EU If you wish to discard this product, please contact your local authorities and ask for the correct method of disposal. For Switzerland: Used electrical or electronic equipment can be returned free of charge to the dealer, even if you dont purchase a new product. Further collection facilities are listed on the homepage of www.swico.ch or www.sens.ch. B. Information on Disposal for Business Users. 1. In the European Union If the product is used for business purposes and you want to discard it: Please contact your SHARP dealer who will inform you about the take-back of the product. You might be charged for the costs arising from take-back and recycling. Small products (and small amounts) might be taken back by your local collection facilities. For Spain: Please contact the established collection system or your local authority for take-back of your used products. 2. In other Countries outside the EU If you wish to discard of this product, please contact your local authorities and ask for the correct method of disposal.

For Australia/New Zealand only: For warranty information please see www.sharp.net.au.