Using Menus

Some of the calculators operations are performed using menus. Pressing or , for example, will display a menu of applicable functions. The following are the operations you should use to navigate between menus. You can select a menu item by pressing the number key that corresponds to the number to its left on the menu screen. The indicator in the upper right corner of a menu means there is another menu below the current one. The indicator means another menu above. Use and to switch between menus. To close a menu without selecting anything, press.
Specifying the Calculation Mode
When you want to perform this type of operation: General calculations Statistical and regression calculations Generation of a number table based on an expression Verify a calculation Perform this key operation: (COMP) (STAT) (TABLE) (VERIF)
Note: The initial default calculation mode is the COMP Mode.
Configuring the Calculator Setup
First perform the following key operation to display the setup menu: (SETUP). Next, use and and the number keys to configure the settings you want. Underlined ( ___ ) settings are initial defaults. MthIO LineIO Specifies the display format. Natural Display (MthIO) causes fractions, irrational numbers, and other expressions to be displayed as they are written on paper. MthIO: Selects MathO or LineO. MathO displays input and calculation results using the same format as they are written on paper. LineO displays input the same way as MathO, but calculation results are displayed in linear format. Linear Display (LineIO) causes fractions and other expressions to be displayed in a single line. Note: The calculator switches to Linear Display automatically whenever you enter the STAT Mode. In this manual, the symbol next to a sample operation indicates Natural Display (MathO), while the symbol indicates Linear Display.
Deg Rad Gra Specifies degrees, radians or grads as the angle unit for value input and calculation result display. Note: In this manual, the symbol next to a sample operation indicates degrees, while the symbol indicates radians. Fix Sci Norm Specifies the number of digits for display of a calculation result. Fix: The value you specify (from 0 to 9) controls the number of decimal places for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed. Example: = 14.286 (Fix 3) 14.29 (Fix 2) Sci: The value you specify (from 1 to 10) controls the number of significant digits for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed. Example: = 1.(Sci 5) 1.(Sci 4) Norm: Selecting one of the two available settings (Norm 1, Norm 2) determines the range in which results will be displayed in non-exponential format. Outside the specified range, results are displayed using exponential format. Norm 1: 102 |x|, |x| 1010 Norm 2: 109 |x|, |x| 1010 Example: = (Norm 1) 0.005 (Norm 2) ab/c d/c Specifies either mixed fraction (ab/c) or improper fraction (d/c) for display of fractions in calculation results. STAT ON ; OFF Specifies whether or not to display a FREQ (frequency) column in the STAT Mode Stat Editor. Rdec ON ; OFF Specifies whether or not to display calculation results using recurring decimal form. Disp Dot ; Comma Specifies whether to display a dot or a comma for the calculation result decimal point. A dot is always displayed during input. Note: When dot is selected as the decimal point, the separator for multiple results is a comma (,). When comma is selected, the separator is a semicolon (;). CONT Contrast for details. Adjusts display contrast. See Adjusting Display

Negative sign () Note: When squaring a negative value (such as 2), the value being squared must be enclosed in parentheses ( 2 ). Since x2 has a higher priority than the negative sign, inputting 2 would result in the squaring of 2 and then appending a negative sign to the result. Always keep the priority sequence in mind, and enclose negative values in parentheses when required. STAT Mode estimated values ( , ,

6th 7th 8th 9th 10th

Multiplication where the multiplication sign is omitted Permutation (nPr), combination (nCr) Multiplication, division ( , ) Addition, subtraction (+, )
Inputting with Natural Display
Selecting Natural Display makes it possible to input and display fractions and , , , x1, 10 , e , Abs) just as they certain functions (log, x2, x3, x , are written in your textbook. 2+' 2 1+' 2
Important: Certain types of expressions can cause the height of a calculation formula to be greater than one display line. The maximum allowable height of a calculation formula is two display screens (31 dots 2). Further input will become impossible if the height of the calculation you are inputting exceeds the allowable limit. Nesting of functions and parentheses is allowed. Further input will become impossible if you nest too many functions and/or parentheses. If this happens, divide the calculation into multiple parts and calculate each part separately. Note: When you press and obtain a calculation result using Natural Display, part of the expression you input may be cut off. If you need to view the entire input expression again, press and then use and to scroll the input expression.
Using Values and Expressions as Arguments

(Natural Display only)

A value or an expression that you have already input can be used as the 7 , for example, you can make argument of a function. After you have input 6 7. it the argument of , resulting in 6
To input 1 + 7 and then change it to 1 + 6 7

7 ' 6 6

As shown above, the value or expression to the right of the cursor after (INS) are pressed becomes the argument of the function that is specified next. The range encompassed as the argument is everything up to the first open parenthesis to the right, if there is one, or everything up to the first function to the right (sin(30), log2(4), etc.) This capability can be used with the following functions: , , ( ), ( ), ( ), , , ( ),.

Overwrite Input Mode (Linear Display only)
You can select either insert or overwrite as the input mode, but only while Linear Display is selected. In the overwrite mode, text you input replaces the text at the current cursor location. You can toggle between the insert and overwrite modes by performing the operations: (INS). The cursor appears as I in the insert mode and as in the overwrite mode. Note: Natural Display always uses the insert mode, so changing display format from Linear Display to Natural Display will automatically switch to the insert mode.
Correcting and Clearing an Expression
To delete a single character or function: Move the cursor so it is directly to the right of the character or function you want to delete, and then press. In the overwrite mode, move the cursor so it is directly under the character or function you want to delete, and then press. To insert a character or function into a calculation: Use and to move the cursor to the location where you want to insert the character or function and then input it. Be sure always to use the insert mode if Linear Display is selected. To clear all of the calculation you are inputting: Press.
Recurring Decimal Calculations
Your calculator uses a recurring decimal when you input a value. Calculation results also can be displayed using recurring decimal form whenever applicable.
Inputting a Recurring Decimal
When inputting a recurrent decimal, press ( ) before inputting its period (repetend) and then input the period up to the ending value. To input the recurring decimal 0.909090. (0.90), perform the following operation: 0 ( ) 90. Important: If the value starts with an integer part (like: 12.3123123.), do not include the integer part when inputting the period (12.312). Recurring decimal input is possible only when Natural Display is selected. To input 0.33333. (0.3 ) 0
To input 1.428571428571. (1.)

428571

To calculate 1.021 + 2.2 (

) 021 ( ) 312

Calculation result displayed as recurring decimal value:

0.5235987756

' = ' + 2' = 5.' + 2' 6 3

5.913591358

While Linear Display is selected, each press of will toggle the currently displayed calculation result between its decimal form and fraction form. = 0.2 = = 1 = 0.4 5

f E-13

Important: Depending on the type of calculation result that is on the display when you press the key, the conversion process may take some time to perform. With certain calculation results, pressing the key will not convert the displayed value. When ON is selected for Rdec on the setup menu, pressing will switch the calculation result to recurring decimal form. For details, see Recurring Decimal Calculations. You cannot switch from decimal form to mixed fraction form if the total number of digits used in the mixed fraction (including integer, numerator, denominator, and separator symbols) is greater than 10. Note: With Natural Display (MathO), pressing instead of after inputting a calculation will display the calculation result in decimal form. Pressing after that will switch the calculation result to recurring decimal form, fraction form or form. The form of the result will not appear in this case.

Basic Calculations

Fraction Calculations
Note that the input method for fractions is different, depending upon whether you are using Natural Display or Linear Display. 2 + 1 = or = ( )2
Note: Mixing fractions and decimal values in a calculation while Linear Display is selected will cause the result to be displayed as a decimal value. Fractions in calculation results are displayed after being reduced to their lowest terms. To switch a calculation result between improper fraction and mixed fraction form: Perform the following key operation: ( ) To switch a calculation result between fraction and decimal form: Press.

Percent Calculations

Inputting a value and pressing become a percent. 150 20% = (%) causes the input value to 20 (%)
Calculate what percentage of 880 is 660. (75%) Increase 2500 by 15%. (2875) 2500 2500
Discount 3500 by 25%. (2625) 3500 3500
Degree, Minute, Second (Sexagesimal) Calculations
Performing an addition or subtraction operation between sexagesimal values, or a multiplication or division operation between a sexagesimal value and a decimal value will cause the result to be displayed as a sexagesimal value. You also can convert between sexagesimal and decimal. The following is the input format for a sexagesimal value: {degrees} {minutes} {seconds}. Note: You must always input something for the degrees and minutes, even if they are zero. 22030 + 3930 = 20 30

2.255 21518

Convert 21518 to its decimal equivalent. 18 (Converts sexagesimal to decimal.) (Converts decimal to sexagesimal.)

Multi-Statements

You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to right when you press. 3+3:(:) 3 3
Using Engineering Notation
A simple key operation transforms a displayed value to engineering notation. Transform the value 1234 to engineering notation, shifting the decimal point to the right. 1234 1234

1.234103 1234100

Transform the value 123 to engineering notation, shifting the decimal point to the left. ( ) 0.123103 ( ) 0.000123106

Calculation History

In the COMP Mode, the calculator remembers up to approximately 200 bytes of data for the newest calculation. You can scroll through calculation history contents using and.

1+1=2 2+2=2

(Scrolls back.) (Scrolls back again.)
Note: Calculation history data is all cleared whenever you press , when you change to a different calculation mode, when you change the display format, or whenever you perform any reset operation.

Replay

While a calculation result is on the display, you can press the expression you used for the previous calculation. + 2.5 = 14.3 7.1 = 4.(Continuing) 3 or to edit

2.5 7.1

14.5 4.9
Note: If you want to edit a calculation when the indicator is on the right side of a calculation result display (see Reading the Display), press and then use and to scroll the calculation.

Answer Memory (Ans)

The last calculation result obtained is stored in Ans (answer) memory. Ans memory contents are updated whenever a new calculation result is displayed. To divide the result of by (Continuing) 4 30
123 + 456 = 579 = 210 (Continuing)
Variables (A, B, C, D, E, F, X, Y)
Your calculator has eight preset variables named A, B, C, D, E, F, X, and Y. You can assign values to variables and also use the variables in calculations. To assign the result of 3 + 5 to variable A To multiply the contents of variable A by 10 (Continuing) To recall the contents of variable A To clear the contents of variable A

10 (A) (A)

(Continuing) 0 (STO)

Independent Memory (M)

You can add calculation results to or subtract results from independent memory. The M appears on the display when there is any value other than zero stored in independent memory. To clear the contents of M To add the result of to M 0 (Continuing) (STO) (M)
To subtract the result of 10 + 5 from M (Continuing) To recall the contents of M

(M) (M)

(Continuing)
Note: Variable M is used for independent memory.
Clearing the Contents of All Memories
Ans memory, independent memory, and variable contents are retained even if you press , change the calculation mode, or turn off the calculator. Perform the following procedure when you want to clear the contents of all memories. (CLR) (Memory) (Yes)

Prime Factorization

In the COMP Mode, you can factor a positive integer up to 10 digits into prime factors up to three digits. To perform prime factorization on (FACT) When you perform prime factorization on a value that includes a factor that is prime number with more than three digits, the part that cannot be factored will be enclosed in parentheses on the display. To perform prime factorization on 4104676 (= 22 (FACT) Any one of the following operations will exit prime factorization result display. Pressing (FACT) or. Pressing any of the following keys: or. Using the setup menu to change the angle unit setting (Deg, Rad, Gra) or the display digits setting (Fix, Sci, Norm). Note: You will not be able to execute prime factorization while a decimal value, fraction, or negative value calculation result is displayed. Trying to do so will cause a math error (Math ERROR). You will not be able to execute prime factorization while the result of a calculation that uses Pol, Rec is displayed. 10132)

Function Calculations

For actual operations using each function, see the Examples section following the list below. : is displayed as 3.141592654, but internal calculations. internal calculations. sin, cos, tan, sin1, cos1, tan1 : Trigonometric functions. Specify the angle unit before performing calculations. See 1. sinh, cosh, tanh, sinh1, cosh1, tanh1 : Hyperbolic functions. Input a function from the menu that appears when you press. The angle unit setting does not affect calculations. See 2. , r, g : These functions specify the angle unit. specifies degrees, r radians, and g grads. Input a function from the menu that appears when you perform the following key operation: (DRG ). See 3. , : Exponential functions. Note that the input method is different depending upon whether you are using Natural Display or Linear Display. See 4. log: Logarithmic function. Use the key to input logab as log (a, b). Base key also 10 is the default setting if you do not input anything for a. The can be used for input, but only while Natural Display is selected. In this case, you must input a value for the base. See 5. ln: Natural logarithm to base e. See

Examples

1 sin 30= 0.5 sin10.5 = sinh 1 = 1.175201194 cosh= /2 radians = 90, 50 grads = 45 ( ) 4 To calculate e5 (SETUP) (DRG ) (r) (DRG ) (g) 30 (sin1) 0.5 (sinh) 1 (cosh1) 1

0.1.175201194 0

2 to three significant digits (Sci 3) ( )5 ( )2 (,) 16

2.97102 2.4.50100

5 log101000 = log 1000 = 3 log216 = 4
6 To calculate ln 90 (= loge 90) to three significant digits (Sci 3) (SETUP) 7 1.2 (Sci) 1.( 5 )( ) 3 2

103 = 1200

(1+1) = 16 (52)3 = 32 = 2
2 To calculate ' 3 (= 3' = 4.242640687.) to three decimal 2 places (Fix 3) 3' (SETUP) (Fix) 3

4.243 4.243

8 To convert rectangular coordinates (' , ' ) to polar coordinates (Pol) (Pol) (,) (,) 2 2

r=2, =45 r= 2 = 45

2 To convert polar coordinates (' , 45) to rectangular coordinates (Rec) 9 (5 + 3) ! = |2 7| 2 = (,) 45 (x!)

X=1, Y=117

11 To obtain three random three-digit integers 1000 (Ran#)
(Results shown here are for illustrative purposes only. Actual results will differ.)
12 To generate random integers in the range of 1 to 6 (RanInt) 1 (,) 6
13 To determine the number of permutations and combinations possible when selecting four people from a group of 10 Permutations: Combinations: (nPr) 4 (nCr) 4

5040 210

14 To perform the following calculations when Fix 3 is selected for the number of display digits: 3 and Rnd(10 3) 3 (SETUP) (Fix) (Rnd) 3 3

10.000 9.999

Statistical Calculations (STAT)
To start a statistical calculation, perform the key operation (STAT) to enter the STAT Mode and then use the screen that appears to select the type of calculation you want to perform. To select this type of statistical calculation: (Regression formula shown in parentheses) Press this key: Single-variable (X) Paired-variable (X, Y), linear regression ( y = A + Bx) Paired-variable (X, Y), quadratic regression ( y = A + Bx + Cx2) Paired-variable (X, Y), logarithmic regression ( y = A + Blnx) Paired-variable (X, Y), e exponential regression ( y = AeBx) Paired-variable (X, Y), ab exponential regression ( y = ABx) Paired-variable (X, Y), power regression ( y = AxB) Paired-variable (X, Y), inverse regression ( y = A + B/x) (1-VAR) (A+BX) ( _+CX2) (ln X) (e^X) (AB^X) (AX^B) (1/X)
Pressing any of the above keys ( to ) displays the Stat Editor. Note: When you want to change the calculation type after entering the STAT Mode, perform the key operation (STAT) (Type) to display the calculation type selection screen.

Inputting Data

Use the Stat Editor to input data. Perform the following key operation to display the Stat Editor: (STAT) (Data). The Stat Editor provides 80 rows for data input when there is an X column only, 40 rows when there are X and FREQ columns or X and Y columns, or 26 rows when there are X, Y, and FREQ columns. Note: Use the FREQ (frequency) column to input the quantity (frequency) of identical data items. Display of the FREQ column can be turned on (displayed) or off (not displayed) using the Stat Format setting on the setup menu. 1 To select linear regression and input the following data: (170, 66), (173, 68), (179, 75)

(STAT)

(A+BX)
Important: All data currently input in the Stat Editor is deleted whenever you exit the STAT Mode, switch between the single-variable and a pairedvariable statistical calculation type, or change the Stat Format setting on the setup menu. The following operations are not supported by the Stat Editor: , (M), (STO). Pol, Rec, and multi-statements also cannot be input with the Stat Editor. To change the data in a cell: In the Stat Editor, move the cursor to the cell that contains the data you want to change, input the new data, and then press. To delete a line: In the Stat Editor, move the cursor to the line that you want to delete and then press. To insert a line: In the Stat Editor, move the cursor to the location where you want to insert the line and then perform the following key operation: (STAT) (Edit) (Ins). To delete all Stat Editor contents: In the Stat Editor, perform the following key operation: (STAT) (Edit) (Del-A).
Obtaining Statistical Values from Input Data
To obtain statistical values, press while in the Stat Editor and then recall the statistical variable ( x, x2, etc.) you want. Supported statistical variables and the keys you should press to recall them are shown below. For single-variable statistical calculations, the variables marked with an asterisk (*) are available. Sum:
x2*, x*, y2, y, xy, x3, x2y, x4
(STAT) (Sum) to Number of Items: n*, Mean: *, , Population Standard Deviation: x*, y, Sample Standard Deviation: sx*, sy (STAT) (Var) to Minimum Value: minX*, minY, Maximum Value: maxX*, maxY (STAT) (MinMax) to (When the single-variable statistical calculation is selected) (STAT) (MinMax) to (When a paired-variable statistical calculation is selected) Regression Coefficients: A, B, Correlation Coefficient: r, Estimated Values: , (STAT) (Reg) to Regression Coefficients for Quadratic Regression: A, B, C, Estimated Values: 1, 2, (STAT) (Reg) to See the table at the beginning of this section of the manual for the regression formulas. , 1, 2 and are not variables. They are commands of the type that take an argument immediately before them. See Calculating Estimated Values for more information. 2 To input the single-variable data x = {1, 2, 2, 3, 3, 3, 4, 4, 5}, using the FREQ column to specify the number of repeats for each items ({xn; freqn} = {1;1, 2;2, 3;3, 4;2, 5;1}), and calculate the mean and population standard deviation.

Inputting the Step value and pressing generates and displays the number table in accordance with the parameters you specified. while the number table screen is displayed will return to Pressing the function input screen in step 2. 1 for the To generate a number table for the function f (x) = x2 + 2 range 1 x 1, incremented in steps of 0.5 (TABLE)
Note: You can use the number table screen for viewing values only. Table contents cannot be edited. The number table generation operation causes the contents of variable X to be changed. Important: The function you input for number table generation is deleted whenever you display the setup menu in the TABLE Mode and switch between Natural Display and Linear Display.

Using VERIFY (VERIF)

VERIFY is a function you can use to verify whether an input equality or inequality is true (indicated by TRUE) or false (indicated by FALSE). The following shows the general procedure for using VERIFY. To verify whether 4' = 12 is true 9 1. Press (VERIF) to enter the VERIFY Mode.
2. Input 4' = 12. 9 (VERIFY) (=)12 You can select the equality symbol or inequality symbol from the menu that appears when you press (VERIFY). 3. To verify, press.
You can input the following expressions for verification in the VERIFY Mode. Equalities or inequalities that include one relational operator 4 = 16, 4 3, 3, 1 + 2 5, (3 6) (2 + 6) 2, etc. Equalities or inequalities that include multiple relational operators 1 + 1, 3 4, 22 = 2 + 2 = 4, 2 + 2 = 4 6, 2 + 3 = + 5 = 8, etc. Note: The verification result will cause 1 to be assigned to Ans memory when TRUE and 0 when FALSE. The input expression can be a total of 99 bytes, including the left side, right side, and relational operators. Any variable (A, B, C, D, E, F, X, Y, M) input into an expression is treated as a value, using the value currently assigned to the variable. Pol and Rec functions cannot be used in an expression. In the VERIFY Mode, the calculator performs a mathematical operation on the input expression and then displays TRUE or FALSE based on the result. Because of this, calculation error can occur or a mathematically correct result may not be able to be displayed when the input calculation expression includes calculation that approaches the singular point or inflection point of a function, or when the input expression contains multiple calculation operations.
Expression Input Precautions
The following types of expressions cause a Syntax ERROR and cannot be verified. An expression with nothing on the left side or right side (Example: = 5' ) 7 An expression in which a relational operator is inside of a fraction or function (Example: 1 = 1 , cos (8 9)) 2 An expression in which a relational operator is enclosed in parentheses (Example: 8 (9 10))

An expression in which multiple relational operators that are not oriented in the same direction (Example: 4) An expression that contains two of the following operators in any combination (Example: 8) An expression that contains consecutive relational operators (Example: 5 9)
VERIFY Mode Calculation Examples
To verify log3 log3 log4 (VERIF) (VERIFY) ( ) (VERIFY) ( ) 4

To verify 0

8 (9 ) ( 8 ) 9 0

(VERIF) (VERIFY) ( ) 8 9

To verify 52 = 25 = 625 (VERIF) 5 (VERIFY) (=) (VERIFY) (=) 625
Calculation Ranges, Number of Digits, and Precision
The calculation range, number of digits used for internal calculation, and calculation precision depend on the type of calculation you are performing.
Calculation Range and Precision
Calculation Range Number of Digits for Internal Calculation Precision to 9.or digits In general, 1 at the 10th digit for a single calculation. Precision for exponential display is 1 at the least significant digit. Errors are cumulative in the case of consecutive calculations.
Function Calculation Input Ranges and Precision
Functions DEG sinx RAD GRA 0 Input Range

109 1010

157079632.7
DEG cosx RAD GRA DEG tanx sin1x cos1x tan1x sinhx coshx sinh1x cosh1x tanhx tanh1x logx/lnx 10x RAD GRA 0 0

90. /2. 100.

Same as sinx, except when x = (2n1) Same as sinx, except when x = (2n1) Same as sinx, except when x = (2n1) 1 9.999999999 230.2585092 1099

ex x ' x2 x x x!

nPr nCr Pol(x, y) Rec(r, )
x 4.1 x 4.0 x 9.0 x 9.0 x 9.9.x 99.99999999 9.x 230.x x x ; x 0 x 0 x 69 (x is an integer) 0 n 1 1010, 0 r n (n, r are integers) 1 {n!/(nr)!} 1 10100
n 1 1010, 0 r n (n, r are integers) n!/r! or 1 n!/(nr)! 1 10100
x , y 9.x2 + y2 9.999999999 1099
0 9.999999999 : Same as sinx
1 10100; 0 b, c The display seconds value is subject to an error of 1 at the second decimal place. Decimal Sexagesimal Conversions x 999999959 59

a , b, c

x 0: ylogx 100 x = 0: y 0 m x 0: y = n, 2 +1 (m, n are integers) n However: ylog x 100 E-27
y 0: x 0, 1/x logy 100 y = 0: x 0 y 0: x = 2n+1, 2n+1 (m 0; m, n are integers) m However: 1/x log y 100

Total of integer, numerator, and denominator must be 10 digits or less (including division marks).

RanInt#(a, b) a

b; a , b

1010; b a

Precision is basically the same as that described under Calculation Range and Precision, above. x y xy, ', 3 , x!, nPr, nCr type functions require consecutive internal calculation, which can cause accumulation of errors that occur with each calculation. Error is cumulative and tends to be large in the vicinity of a functions singular point and inflection point. The range for calculation results that can be displayed in form when using 106. Note, however, that internal calculation error Natural Display is x can make it impossible to display some calculation results in form. It also can cause calculation results that should be in decimal form to appear in form.

Errors

The calculator will display an error message whenever an error occurs for any reason during a calculation. There are two ways to exit an error message display: Pressing or to display the location of the error, or pressing to clear the message and calculation.
Displaying the Location of an Error
While an error message is displayed, press or to return to the calculation screen. The cursor will be positioned at the location where the error occurred, ready for input. Make the necessary corrections to the calculation and execute it again. When you input 2 = by mistake instead of 2 2=
Clearing the Error Message
While an error message is displayed, press to return to the calculation screen. Note that this also clears the calculation that contained the error.

Error Messages

Math ERROR Cause: The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. Your input exceeds the allowable input range (particularly when using functions). The calculation you are performing contains an illegal mathematical operation (such as division by zero). Action: Check the input values, reduce the number of digits, and try again. When using independent memory or a variable as the argument of a function, make sure that the memory or variable value is within the allowable range for the function. Stack ERROR Cause: The calculation you are performing has caused the capacity of the numeric stack or the command stack to be exceeded. Action: Simplify the calculation expression so it does not exceed the capacity of the stack. Try splitting the calculation into two or more parts. Syntax ERROR Cause: There is a problem with the format of the calculation you are performing. Action: Make necessary corrections. Insufficient MEM Error Cause: The configuration of TABLE Mode parameters caused more than 30 X-values to be generated for a table. Action: Narrow the table calculation range by changing the Start, End, and Step values, and try again. Argument ERROR Cause: A non-integer argument was input for the random number function (RanInt#). Action: Input only integers for the argument.

Before Assuming Malfunction of the Calculator.
Perform the following steps whenever an error occurs during a calculation or when calculation results are not what you expected. If one step does not correct the problem, move on to the next step. Note that you should make separate copies of important data before performing these steps. 1. Check the calculation expression to make sure that it does not contain any errors. 2. Make sure that you are using the correct mode for the type of calculation you are trying to perform. 3. If the above steps do not correct your problem, press the key. This will cause the calculator to perform a routine that checks whether calculation functions are operating correctly. If the calculator discovers any abnormality, it automatically initializes the calculation mode and clears memory contents. For details about initialized settings, see Configuring the Calculator Setup. 4. Initialize all modes and settings by performing the following operation: (CLR) (Setup) (Yes).

Replacing the Battery

A low battery is indicated by a dim display, even if contrast is adjusted, or by failure of figures to appear on the display immediately after you turn on the calculator. If this happens, replace the battery with a new one. Important: Removing the battery will cause all of the calculators memory contents to be deleted. 1. Press (OFF) to turn off the calculator. 2. Remove the cover as shown in the illustration and replace the battery, taking care that its plus (+) and minus () ends are facing correctly. 3. Replace the cover. 4. Initialize the calculator: (CLR) (All) (Yes) Do not skip the above step!

Screw Screw Screw

fx-83GT PLUS

fx-85GT PLUS

Specifications
Power Requirements: fx-83GT PLUS: AAA-size battery R03 (UM-4) 1 fx-85GT PLUS: Built-in solar cell; button battery LR44 (GPA76) 1 Approximate Battery Life: fx-83GT PLUS: 17,000 hours (continuous display of flashing cursor) fx-85GT PLUS: 3 years (based on one hour of operation per day) Power Consumption: 0.0002 W (fx-83GT PLUS) Operating Temperature: 0C to 40C (32F to 104F) Dimensions: fx-83GT PLUS: 13.8 (H) 80 (W) 162 (D) mm 1 /2 (H) 31/8 (W) 63/8 (D) fx-85GT PLUS: 11.1 (H) 80 (W) 162 (D) mm 3 /8 (H) 31/8 (W) 63/8 (D) Approximate Weight: fx-83GT PLUS: 100 g (3.5 oz) including the battery fx-85GT PLUS: 95 g (3.4 oz) including the battery