TI-36X

Scientific Calculator

USERS GUIDE

2000, 2003 Texas Instruments Incorporated education.ti.com ti-cares@ti.com
Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 0 of 48

Table of Contents

Turning the Calculator On and Off..1 Alternate Functions...1 Display...2 Scrolling...2 Menus...3 Fix....3 Clearing, Correcting, and Resetting..4 Display Indicators...5 Order of Operations..6 Basic Operations..7 Last Answer..7 Percent...9 Fractions...10 Exponents, Roots, and Reciprocals..11 Notation...12 Pi...13 Memory..14 Stored Operations..16 Logarithms..18 Trigonometric Functions...20 Angle Modes...22 Rectangular/Polar..24 Hyperbolic Functions...25 Metric Conversions..26 Physical Constants..28 Integrals...30 Probability...32 Statistics...34 Boolean Logic Operations..39 Number-System Modes..40 Complex Numbers..41 Error Conditions..43 In Case of Difficulty..45 Battery Replacement...45 Service Information..46
Turning the Calculator On and Off
The TI-36X is battery powered. To turn on the TI-36X , press T. To turn off the TI-36X , press %r. All data in memory is retained. APD (Automatic Power Down) turns off the TI-36X automatically if no key is pressed for about five minutes. Press T after APD to power up again; the display, pending operations, settings, and memory are retained.

Alternate Functions

Most keys can perform two functions. The first function is marked on the key, and the second function is marked above the key, as illustrated below.
2nd function Primary function
Press % to activate the second function of a key. To cancel the second function before making an entry, press % again. In this manual, second functions are shown in brackets ([ ]). For example, press P to find the square of a number. Press %n to find the square root of a number.
Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 1 of 48

Display

The TI-36X has a two-line display. The first line (Entry Line) displays an entry of up to 88 digits or items (47 for Stat or Stored Operations). Entries begin on the left; those with more than 11 digits scroll to the left. You can have as many as 23 levels of parentheses and up to 8 mathematical operations pending. The second line (Result Line) displays a result of up to 10 digits, plus a decimal point, a negative sign, a x10 indicator, and a 2-digit positive or negative exponent. Results that exceed the digit limit are displayed in scientific notation. Note: In the text, numbers containing decimal fractions are shown in decimal format consistent with the calculator display.

Scrolling

Scroll with ", !, #, and $. Press " and ! to scroll horizontally through the current or previous entries, or to move the underscore within a menu list. Press %" or %! to move the cursor to the beginning or end of the entry. After an expression is evaluated, press # and $ to scroll through previous entries, which are stored in the TI-36X history. If you edit a previous entry and press V, the calculator will evaluate the new expression and return the new result.
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Some key presses access menus: S, R, e, -, 8, &, /,., %q, %p, %d, %^, %m, %], %6, %f, %h, %Z, %t, %\, and %s. The menu choices are displayed on the screen. Press " or ! to scroll through the menu and underline an item. To select an underlined item: Press V while the item is underlined. Or, For menu items followed by an argument value, enter the argument value while the item is underlined. The item and the argument value are transferred to the current entry. However, if the argument is another function, you need to press V to select the first function before proceeding to the next. To return to the previous screen without selecting the menu item, press 4.
%t displays a menu: F0123456789. To round displayed results, scroll with " or ! to select the desired number of decimal places, or enter the numeral corresponding to the desired number of decimal places. The displayed value is padded with zeroes if needed. To restore standard notation (floating decimal), select F (default) in the menu, or press %tI. You can specify rounding places before you begin your calculations, before you complete an operation with V, or after the results are displayed.

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Clearing, Correcting, and Resetting
Key 4 Action Action depends on position of the cursor. If cursor is in the middle of an entry, clears character under the cursor and all characters to the right of the cursor. If cursor is at the end of an entry, clears the entire entry. If an Error message is displayed, clears the error message and moves the cursor to last entry in history. If a menu is displayed, exits menu. ' If the cursor is on a character, deletes the character under the cursor. If the cursor is at the end of an entry, deletes the character to the left of the cursor. Lets you insert one or more characters at %[ the cursor. %s Resets the TI-36X. Returns unit to default settings; clears memory variables, "V pending operations, all entries in history, or T&4 statistical data, Ans, and stored operations. MEM CLEARED is displayed. (simultaneously) You can overwrite entries. Move the cursor to the desired location and begin pressing keys. The new keypresses will overwrite the existing entry, character by character. Before beginning a new set of examples or problems in this manual, reset the calculator to ensure that your displays will be the same as those shown. 4
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Display Indicators

Special indicators may appear in the display to provide additional information about functions or results. Indicator 2nd FIX SCI or ENG STAT DEG, RAD, or GRAD HEX or OCT x10 # $ Meaning 2nd function is active. Calculator is rounding results to specified number of places. Scientific or engineering notation is active. Calculator is in Statistics mode. Specifies angle-unit setting (degrees, radians, or grads). The default is the degree setting. Calculator is in hexadecimal or octal mode. Precedes the exponent in scientific or engineering notation. An entry is stored in memory before and/or after the active screen. Press # and $ to scroll. An entry or menu list extends beyond the capacity of the screen. Press " and ! to scroll. Complex number, real part, or complex number, imaginary part. Calculator is busy.

" !

r or i
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Order of Operations

The TI-36X uses EOS (Equation Operating System) to evaluate expressions. Order 1st 2nd Evaluation Expressions inside parentheses. Functions which need a ) and precede the argument, such as sin, log, and all R/P menu items; Boolean Logic NOT and 2s complement. Fractions. Functions that are entered after the argument, 2 r g such as x and angle unit modifiers ( ); metric conversions. x Exponentiation (^) and roots ( ). Negation (L). Permutations (nPr) and combinations (nCr). Multiplication, implied multiplication, division. Addition and subtraction. Boolean logic AND. Boolean logic XOR and OR. b d Conversions (4A /c/ /e, 4F/D, 4DMS). V completes all operations and closes all open parentheses.

435+215 645

Ans4Ab/cd/c 345

Ans4FD

6.8 <J3110V AnsM310 M2.04
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Exponents, Roots, and Reciprocals
P K Calculates the square of a value. Raises a value to any power within the range of the calculator. If the number is negative, the power must be an integer. If you include an operation in the exponent, you must use parentheses. %n Calculates the square root of a positive value. %j Calculates any root of any positive value (within the range of the calculator) and any odd-numbered integer root of a negative value. %k Yields the reciprocal of a value. 5P:4KN2:1OV

5 +4^(2+1)

89. (49)

%n49OV

7. 6x64

6%j64V

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Notation

%Z displays the Numeric Notation mode menu. FLO (default): Displays results in floating notation, with digits to the left and right of the decimal point. SCI: Displays results in scientific notation. The format of scientific notation is n x 10^p, where 1{n<10 and p is an integer. ENG: Engineering notation (exponent is a multiple of 3). These modes affect only the display of results, and not the internally stored results. M lets you enter a value in scientific notation, regardless of the numeric notation mode. Press J before entering a negative exponent.
1 I 2 M 5 + 4 I 6 M 7 V 1.2E5+4.6E7 46120000.

%Z"V

1.2E5+4.6E7 4.612X1007

SCI DEG

1.2E5+4.6E7 46.12X1006

ENG DEG

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5 enters the value of p. It is stored internally to 13 digits (3.141592653590) and displayed to 10 digits (3.141592654). When multiplying p by a number, you do not need to press <; multiplication is implicit.
Examples Find the circumference and the area of a circle having a radius of 5 centimeters. Find the surface area of a sphere having a radius of 5 centimeters. (Remember: circumference=2pr; area =pr ; surface area=(4p)r.) Use the Fix function to display results rounded to the nearest whole number.

%t"V25<5 V #'"""PV 2p5

31. p5

The circumference of the circle is 31 centimeters, and the area is 79 square centimeters. The surface area of the sphere is 314 square centimeters.
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Memory

The TI-36X has five memory variables. You can store a real number or an expression that results in a real number to a memory variable. For storing complex numbers to memory, see page 31. S %q R %p Lets you store values to variables. Recalls the values of variables. Recalls variables by letter designation. Displays menu: CLR VAR: Y N. Select Y (yes) and press V to clear all memory variables and re-initialize seed in E.
When you press S, a menu of variables displays: A, B, C, D, and E. Press " or ! to select a variable. Press V, and the value of your last answer is stored into the variable you have selected. If that variable already contains a value, the new one will replace it. If you enter an expression and press S and then V, the TI-36X will simultaneously evaluate the expression and store the resulting value to the memory variable you select. Press %q to display the menu of memory variables. Press " or ! to select the variable you wish to recall and press V. The value in this variable is inserted into your current entry at the cursor. Pressing R also displays the menu of memory variables, and you select the one you wish to recall. However, the variable name rather than the value itself is inserted into your current entry. Since the variable name contains the value, evaluation of the expression yields the same results. 14
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In addition to serving as a memory variable, E stores a seed value to generate a random number when you are using the Probability function (see page 32).
Problem A gravel quarry is opening two new pits: one is 350 meters by 560 meters, and the other is 340 meters by 610 meters. What volume of gravel would the company remove from each if they excavated to a depth of 150 meters? To a depth of 210 meters? Display results in engineering notation.
% Z " " V 0 < 350560"A 196.x1003 560SV

340<610S"V

340610"B 207.4x1003

150<%qVV

150196000 29.4 x1006

210<%qVV

210196000 41.16 x1006

150<R"VV

150B 31.11 x1006

210<R"VV

210B 43.554 x1006
From the first pit: 29.4 million cu.m. and 41.16 million cu.m., respectively. From the second pit: 31.11 million cu.m. and 43.554 million cu.m., respectively.

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Stored Operations

The TI-36X stores two operations, Op1 and Op2. To store an operation to Op1 or Op2 and recall it: 1. Press %b or %c. 2. Enter the operation, beginning with an operator (such as +, M, Q, P, or ^). You can store any combination of numbers, operators, and menu items and their arguments, to a limit of 47 characters or items. 3. Press V to save the operation to memory. 4. Each subsequent time you press 2 or 3, the TI-36X recalls the stored operation and applies it to the last answer. The expression with the stored operation appears on the first line of the display, and the result appears on the second line. A counter on the left side of the result line displays the number of consecutive times you have pressed Op1 or Op2. You can set the TI-36X to display only the counter and the result, and not the expression on the entry line. Press %b or %c, press ! until the = is highlighted () and press V. Repeat to toggle this setting off.
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%b<2V

OP2=+5

10+5 1

15+5 2

20+5 3

50+5 1
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Logarithms

%d displays a menu of log functions. log 10^ ln e^ Yields the common logarithm of a number. Raises 10 to the power you specify. Yields the logarithm of a number to the base e (e=2.718281828495). Raises e to the power you specify.
Select the function on the menu, then enter the value and complete the expression with O. %d log 10

log(100)

2. 10^(3.2) 1584.893192

%d"3I2OV

%d""9I453O V %d!4I7OV

ln(9.453) 2.246332151

e^(4.7) 109.9471725
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Problem A radioactive substance decays exponentially. If yo grams of certain radioactive substance are initially present, the number of grams y(t) after t days is given by the formula: y(t)=yoe After 340 days, how much of a 5-gram sample of this radioactive substance remains? After 475 days? Store the constant part of the exponent to memory so you need enter it only once. Round results to two decimal places.
J0I00015SV L0.00015A L0.00015

-0.00015t

5<%d"""V R<340OV %t2

5e^(A340) 4.751393353

5 e^(A340) 4.75
5<%d"""V R<475OV

5e^(A475) 4.66

About 4.75 grams of this radioactive substance remain after 340 days, and 4.66 grams remain after 475 days.
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Trigonometric Functions

e displays a menu of the trigonometric functions -1 -1 -1 (sin, sin , cos, cos , tan, tan ). Press " or ! to select the desired function, enter the value, and close the parentheses with O. Set the desired angle mode before starting trigonometric calculations. The problems below assume the default, which is degree mode. See the section on Angle Modes (page 22) for other angle modes. e""

cos cos

30O%t4V

cos(30)

0.8660 sin sin

e"

0I7391OV

sin (0.7391 47.6548

e""Ve!1O OV

cos(tan (1) 0.7071

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Problem Find angle a in the right triangle below. Then find the length of the hypotenuse h and angle b. Measurements of length and height are in meters. Round off results to one decimal place.

3 b h a 7

Remember 3/7=tan a, so a=tanL1(3/7). Then 3/h=sin a, so h=3/sin a. Then 7/h=sin b, so b=sinL1(7/h).
%t1e!3=7O V e%uOV tan (37)

23.2 sin(Ans)

0.4 3=%uV 3Ans

7.6 sin (7Ans) 66.8

e"7=%uOV
Angle a is about 23.2 degrees. The hypotenuse h is about 7.6 meters. Angle b is about 66.8 degrees.
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Angle Modes

/ displays a menu to specify the angle unit modifier r g for an entry: degrees (), radians ( ), grads ( ), or DMS ( ). It also lets you convert an angle to DMS Notation (4DMS). You can use a DMS value in calculations, but then the results will no longer be in DMS format; the calculator will automatically convert to decimal format.
Problem Two adjacent angles measure 123145 and 265438, respectively. Sum the two angles and display the results in DMS format.

12/ r g

/"46/"":

123146+

26/54/"38/"" VV /!VV

%c<AV

%t2%m""22

cosh(2-1.54

1.4.63

%m""523

27.81.92

When x=2, y=4.63; when x=5, y=81.92.
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Metric Conversions

Press. to access a menu of 20 conversions from the metric system into the English system and vice versa. Scroll through the choices with " and ! and select with V.To reverse the direction of the conversion, press % while the desired item is underlined. If you enter a negative value, enclose it in parentheses. cmin centimeters to inches inches to centimeters mft meters to feet feet to meters myd meters to yards yards to meters km kilometers to miles mile miles to kilometers lgal liters to U.S. liquid gallons (US) U.S. liquid gallons to liters lgal liters to U.K. gallons (UK) U.K. gallons to liters km/h kilometers per hour to m/s meters per second meters per second to kilometers per hour goz grams to ounces avoirdupois ounces avoirdupois to grams kglb kilograms to pounds pounds to kilograms CF Celsius to Fahrenheit Fahrenheit to Celsius cm P 2.54 in Q 2.54 mP0.3048 ftQ0.3048 mP0.9144 ydQ0.9144 kmP1.609344 mileQ1.609344 l P 3.785411784 gal Q 3.785411784 lP4.54609 galQ4.54609 kmhP3.6 msQ3.6 g P 28.349523125 oz Q 28.349523125 kg P.45359237 lb Q.45359237 C Q 9/5 + 32 (F - 32) Q 5/9
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Problem Convert 10 kilometers into miles. Then convert 50 miles into kilometers. Round results to two decimal places.

10."""

kmmile

10 kmmile 6.21

50."""%V V

50 milekm 80.47

Problem Under a pressure of one atmosphere, ethyl alcohol freezes at L117C and boils at 78.5C. Convert these temperatures to the Fahrenheit scale.

NJ117O.!

(L117) C L178.60

#78I5''V

78.5 CF 173.30
Ethyl alcohol freezes at L178.6F and boils at 173.3F at one atmosphere of pressure.
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Physical Constants

Press %] to access a menu of 16 physical constants. Scroll through the choices with " and !.
Constant c g h NA R me mp mn mm G F ao re k e u speed of light gravitational acceleration Plancks constant
Value 299792458 meters per second 9.80665 meters per second 2
6.62606876Q 10 -34 Joule seconds Avogadros number 6.02214199Q molecules per mole ideal gas constant 8.314472 Joules per mole Kelvin electron mass 9.10938188Q 10 -31 kilograms proton mass 1.67262158Q 10 -27 kilograms neutron mass 1.67492716Q 10 -27 kilograms muon mass 1.88353109Q 10 -28 kilograms universal 6.673 Q 10 -11 Newton meters2 gravitation per kilogram 2 Faraday constant 96485.3415 coulombs per mole Bohr radius 5.291772083Q 10 -11 meters classical electron 2.817940285Q 10 -15 meters

radius Boltzmann constant 1.3806503Q 10 -23 Joules per electron charge atomic mass unit
K 1.602176462Q 10 -19 coulombs 1.66053873Q 10 -27 kilograms
As you scroll through the menu, the value of the underlined constant appears in the result line. When you press V, the name of the underlined constant is transferred to the entry line at the cursor. 28
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Problem A brick falls off the roof of a building and hits the sidewalk 3.5 seconds later. Find the height of the building in meters and then in feet, rounded off to the nearest whole number. The formula for distance fallen is y= L 2 gt
where t= time in seconds, and g=gravitational acceleration (9.80665 meters per second-squared). We measure the y coordinate from the position where the brick began its fall, and we specify that y is positive upwards.

J112< L12

%]"

c g h N R 9.80665

M12g L4.903325

<3I5PV

Ans3.5 L60.06573125

Ans3.5

."VV

Ans mft

The height of the building is 60 meters or 197 feet.
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Integrals

The TI-36X performs numerical integration using Simpsons Rule. To prepare for an integral, store the lower limit in memory variable A, the upper limit in memory B, and the number of intervals (from 1 to 99) in memory C. Press 0 and enter the expression, using memory variable A as the independent variable. Then press V. While the calculator is processing the data, CALC displays. When the calculation is successfully completed, the TI-36X will return the numerical value to the result line. In addition, the calculator will clear memory variable C; A and B will be equal to the upper limit. If A>B, or if C is not an integer 1-99, or if A, B, or C is undefined, Integrate Error will display, and A, B, and C will be cleared. If you want to solve a given problem again using a different number of intervals or different limits, enter values to store in memory variables A, B, and C. Then scroll to the integration problem in history and press V; the calculator will solve the same problem with the new data. The time the calculator takes to solve the problem depends on the complexity of the problem and the number of intervals. You can abort the calculation by pressing and holding T until Integrate Error is displayed. With polynomials up to the third degree, Simpsons rule yields the exact answer, so increasing the number of intervals will not change the results. However, with polynomials of higher degree and equations containing more complicated functions (such as trigonometry), increasing the number of intervals will improve the precision of the results. Note: When you perform integration with trigonometric functions, the calculator must be in radian mode. 30

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Statistics

%f displays a menu. 1-VAR LIN Analyzes data from 1 set of data with 1 measured variable: x. Analyzes paired data with 2 measured variables: x, the independent variable, and y, the dependent variable. Yields regression equation in the form y=a+bx. Analyzes paired data with 2 measured variables. Yields regression equation in the form y=a+b ln x. Analyzes paired data with 2 measured variables. Yields regression equation in x the form y=ab. Analyzes paired data with 2 measured variables. Yields regression equation in b the form y=ax. Clears data values without exiting STAT mode.

LN EXP PWR CLRDATA

You can enter up to 42 points or data pairs. When using the LN regression, you do not need to find the natural logarithms of the numbers. Enter the data directly, and the TI-36X makes the transformation. Similarly, when you want to make a prediction with the LN regression equation, you enter the value of x directly (and not ln x), and the calculator returns the predicted value of y (and not ln y).
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To set up the problem and perform the analysis: 1. Press %f. Select the desired type of analysis from the menu and press V. The STAT indicator displays. 2. Press 7. 3. Enter a value for X1 and press $. 4. Then: In 1-VAR stat mode, enter the frequency of occurrence (FRQ) of the data point and press $. FRQ default=1. If FRQ=0, the data point is ignored. Or, In LIN, LN, EXP, OR PWR, enter the value of Y and press $. 5. Repeat steps 3 and 4 until all data points are entered. You can change or delete data points by scrolling to the desired point and editing or pressing '. If you are in 2-VAR mode, you must delete both the data point and the frequency. You can add new points by scrolling to the last point and pressing $; the calculator will prompt you for the new data. If you add or delete data points, the TI-36X automatically reorders the list. 6. When all points and frequencies are entered: Press 8 to display the menu of variables (see table for definitions) and their current values. Or, Press 7 to return to the blank STAT screen. You can perform calculations with data variables (, , etc.). After such calculations, you can return to the display of variables by pressing 8 again. You can return to the data entries again by pressing 7.

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Boolean Logic Operations

Press - to access a menu of Boolean Logic operations.
Function AND OR XOR NOT 2s Effect on Each Bit of the Result 0 AND 0 = OR 0 = XOR 0 = 0 NOT 0 = 1 2s complement 0 AND 1 = OR 1 = XOR 1 = 1 NOT 1 = AND 1 = OR 1 = XOR 1 = 0
Except for NOT and 2s complement, these functions compare the corresponding bits of two values. The result is displayed in the current number base. You can perform logical operations in the decimal, octal, and hexadecimal modes.
Examples Perform the operations 9 AND 2, 9 OR 2, and 9 XOR 2.

9and or xor

9 and 2

0. 9 or 2

9-"2V

11. 9 xor 2

9-""2V
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Number-System Modes

Number system modes are second functions of keys. %| Selects decimal mode (default). When the calculator is in another number mode, press %| to return the calculator to decimal mode. Note: Normally you should keep the calculator in the decimal mode, because some of the calculators operating features are limited or nonexistent in the other modes. Selects octal mode. You can enter positive octal numbers as large as 3777777777. Numbers beyond this are interpreted as negative. Selects hexadecimal mode. You can enter positive hexadecimal numbers as large as 7FFFFFFFFF. Numbers beyond this are interpreted as negative.
To enter the hexadecimal digits A through F, press % and then the appropriate key shown below.
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Problem Add 456+125 in base 8 and in hexadecimal. Then return the calculator to decimal mode and do the same addition.

%~456:125V 456+125

OCT DEG

603 456+125

HEX DEG

57b %|#V 456+125

Complex Numbers
Enter a complex number as an ordered pair in parentheses, with the real part first. Operations with complex numbers are limited to :, ;, <, =, J, and the functions in the menu below. When you perform computations with complex numbers, the result line displays the real part of the answer, and r shows on the indicator line; press " to see the imaginary part, and i shows on the indicator line. If a computation with complex numbers yields a real number, the r and i will no longer be displayed. When you store a complex number in memory, it takes up two memory locations. Store to memory variable A, and it occupies A (for the real part) and B (for the imaginary part); or store to C, and it occupies C and D.

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Press %\ to access a menu. conj Returns the conjugate of a complex number. real Returns the real part of a complex number. imag Returns the imaginary part of a complex number. abs Returns the absolute value of a number.
Problem Find the product of (4-2i) and (3+5i); display the imaginary part as well as the real part of the result. Then find the conjugate of the result, and display the imaginary part as well as the real part.
N 4 % i J 2 O < N 3 % (4,L2)(3,5 22. i5OV

(4,L2)(3,5 14.

conj real

22%i14OV

conj(22,14) 22. r

conj(22,14) M14. i

Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 42 of 48

Error Conditions

When Error appears in the display, the calculator will not accept a keyboard entry until you press 4 or %r. Press 4 once to clear the error message and return to the entry that caused the error; then you can edit the entry or clear the display. ARGUMENT - a function does not have the correct number of arguments. DIVIDE BY 0 You attempted to divide by 0. In statistics, n=1. SYNTAX - The command contains a syntax error: entering more than 23 pending operations, 8 pending values, or having misplaced functions, arguments, parentheses, or commas. EQU LENGTH - An entry exceeds the limit (88 characters or items for Entry Line and 47 for Stat or Stored Operation lines). OP - Pressing 2 or 3 when constants not defined or while in STAT mode. OVERFLOW - The result is outside the range of the calculator: In decimal, range |M110 or {110. In Hex, range 0-7FFFFFFFFF, 8000000001FFFFFFFFFF. In Oct, range 0-3777777777, 40000000017777777777 FRQ DOMAIN - FRQ value (in 1-VAR stats) < 0 or >99, or not an integer.
Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 43 of 48
DOMAIN - You specified an argument to a function outside the valid range. For example: x For : x=0; y<0 and x not an odd integer. x For y : y and x=0; y<0 and x not an integer. For x, x<0. For x!: x is not an integer between 0 and 69. For Boolean and, or, xor: x or y in Hex out of range 39 (>2 ). For log or ln: x0. For tan: x=90, -90, 270, -270, 450, etc. For sin-1 or cos-1: |x| > 1. For tanh-1(x): |x|>1. For cosh-1 (0). For cosh-1(x): x<0. For nCr or nPr: either n or r is not an integer | 0. || 1E10, where is an angle in a trig or P4Rx(, P4Ry( function. STAT Pressing 8 with no defined data points. When not in STAT mode, pressing 7, 8, or %h. COMPLEX - Using a complex number incorrectly in an operation or in memory. BASE - Using a base incorrectly or in the wrong mode. INTEGRATE - Error in setting up integration problem: A>B, or C not integer 1-99, or A, B, or C undefined.

Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 44 of 48

In Case of Difficulty

Review instructions to be certain calculations were performed properly. Press T and 4 simultaneously to reset. When released, memory and settings are cleared, and MEM CLEARED is displayed. Check the battery to ensure that it is fresh and properly installed. Change the battery when: T does not turn the unit on, or The screen goes blank, or You get unexpected results.

Battery Replacement

Replace protective cover. Place the TI-36X face down. 1. Remove screw case, using a small Phillips screwdriver. 2. Carefully separate front from back, starting from the bottom. Caution: Be careful not to damage any internal parts. 3. Remove battery, using a small Phillips screwdriver, if necessary; replace with new battery. Install batteries according to polarity (+ and -) diagrams. Caution: Avoid contact with other TI-36X components while changing the battery. 4. If necessary, press T and 4 simultaneously to reset. When released, memory and settings are cleared, and MEM CLEARED is displayed. 5. Properly dispose of used batteries immediately. Do not leave them within the reach of children. 45
Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 45 of 48

Service Information

TI Product and Services Information For more information about TI products and services, contact TI by e-mail or visit the TI calculator home page on the world-wide web. e-mail address: Internet address: ti-cares@ti.com education.ti.com
Service and Warranty Information For information about the length and terms of the warranty or about product service, refer to the warranty statement enclosed with this product or contact your local Texas Instruments retailer/distributor.
Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 46 of 48

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