Texas instruments TI.34 II Explorer Plus Manual

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Order of Operations

TI.34 ×× Explorer Plus

The TI-34 Ö uses EOSé (Equation Operating System) to evaluate expressions.

Scientific Calculator

General Information

Examples: See the last page of these instructions for

keystroke examples that demonstrate many of the TI functions. Examples assume all default settings.

turns on the TI-34 Ö. % ' turns it off and clears

the display. APD™ (Automatic Power Down™) turns off

34 Ö automatically if no key is pressed for about 5

the TI

minutes. Press

after APD. The display, pending

operations, settings, and memory are retained. 2-Line Display: The first line (Entry Line) displays an entry

of up to 88 digits (or 47 digits for Stat or Constant Entry Line). Entries begin on the left; those with more than 11 digits scroll to the right. Press

% !

Press

or % " to move the cursor immediately to

and " to scroll the line.

the beginning or end of the entry. 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.

Indicator Definition 2nd

FIX STAT RAD

ÄÄÄÄQÄÄÄÄ ÄÄÄÄRÄÄÄÄ

N/D¹n/d

º »

2nd function. Fixed-decimal setting. Statistical mode. Angle mode set to radians. Displays quotient (Q) and remainder (R) for

integer divide result. The fractional result can be further simplified.

An entry is stored in memory before and/or after the active screen. Press

scroll.

¹ ¸

2nd Functions:

An entry or menu displays beyond 11 digits.

and " to scroll.

Press

displays the 2nd indicator, and then selects the 2nd function (printed above keys) of the next key pressed. For example,

% b

25 E

calculates the square root of 25 and returns the result, 5. Menus: Certain TI

34 Ö keys display menus:

z % h, L, % d, % ~, % A % B, % t, u, % w, H % I, =, % k, % ‚

and " to move the cursor and underline a menu

Press

, and %

item. To return to the previous screen without selecting the

item, press

Press < while the item is underlined, or

For menu items followed by an argument value, enter the

. To select a menu item:

argument value while the item is underlined. The item and the argument value are displayed on the previous screen.

Previous Entries

After an expression is evaluated, use # and $ to scroll through previous entries, which are stored in the TI memory. You cannot retrieve previous entries while in mode.

Last Answer

The most recently calculated result is stored to the variable Ans. Ans is retained in memory, even after the TI turned off. To recall the value of Ans:

Press % i (Ans displays on the screen), or

Press any operations key (T, U, F, etc.) as the first

part of an entry. Ans and the operator are both displayed.

and $ to



## $$

STAT

%% ii

34 Ö is

Clearing and Correcting

% f % { % t

CLRDATA

% w

% 

Math Operations

% d

Some functions require you to enter 2 values, real numbers

or expressions that equal return a real number. separates two values.

Integer Divide

% Y

quotient, stored to Ans.

1st Expressions inside parentheses. 2nd Functions that need a ) and precede the argument,

such as the sin, log, and all R

P menu items.

3rd Fractions. 4th Functions that are entered after the argument, such

5th Exponentiation (^) and roots (

and angle unit modifiers (Ä Å Æ r).

as x

). 6th Negation (M). 7th Permutations (nPr) and combinations (nCr). 8th Multiplication, implied multiplication, division. 9th Addition and subtraction.

10th Conversions (A

11th

completes all operations and closes all open

F, 4D, 4%, 4DMS).

parentheses.

Clears an error message.

Clears characters on entry line.

Moves the cursor to last entry in

history once display is clear.

Deletes the character at the cursor. Deletes all characters to the right when

you hold down

; then, deletes 1

character to the left of the cursor each

time you press

. Inserts a character at the cursor. Clears all memory variables. Clears all data points without exiting

mode.

STAT

YClears all data points and exits

STAT

mode. Resets the TI-34 Ö. Returns unit to

default settings; clears memory

variables, pending operations, all entries in history, and statistical data; clears constant mode and

Ans

%% dd

displays a menu with various math functions.

% `

abs(#)

digits

round(#, iPart(#)

fPart(

)

min(

)

max(

lcm(

)

gcd(

(#)

remainder(

Displays absolute value of #. Rounds # to specified number of

)

Returns only the integer part ( fractional part (

fPart

) of #.

Returns the minimum (

)

max

) of two values,

(

Finds the least common multiple ( or greatest common divisor (

and

values,

Calculates the cube of #. Calculates the cube root of #.

Returns the remainder resulting from

)

the division of 2 values,

iPart

) or maximum

min

and

gcd

digits

) or

lcm

) of two

)

%% YY

divides 2 positive integers and displays the , and the remainder, R. Only the quotient is

Fractions

%% ~~ ?? OO NN

>> }} RR QQ

Fractional calculations can display fractional or decimal results.

% ~

These determine how fraction results are displayed. You select 2 items:

AËb/c

(default) displays fraction results.

d/e

Manual

Auto

mixed number, and denominator. The denominator must be a positive integer. To negate a fraction, press

} <

prime factor. If you want to choose the factor (instead of letting the calculator choose it), press factor (an integer), and then press

% ?

used to simplify the last fraction result. You must be in

Manual

toggle back to the simplified fraction.

converts a fraction to a decimal, if possible.

converts a decimal to a fraction, if possible.

% N % O

simple fraction.

=3.141592653590 for calculations. p=3.141592654 for

display. In multiplication or fractional calculations. The TI accepts

Angle Modes

% I

degrees or radians.

displays a menu to specify the Angle unit modifier— degrees ( (convert an angle to DMS notation).

To set the Angle mode for any part of an entry:

Select the Angle mode. Entries are interpreted and results

displayed according to the Angle mode, or Select a unit modifier (Ä Å Æ r ) for any part of an entry.

Entries with unit modifiers are interpreted accordingly, overriding the Angle mode.

To convert an entry:

Set the Angle mode to the unit you want to convert

Then use a unit modifier to designate the unit to convert

from

inside parentheses first.), or Select

notation.

Trig and Logarithms

% B

(sin, sin function from the menu and then enter the value. Set the desired Angle mode before starting trigonometric calculations.

% A

(

log, 10

then enter the value, and complete it with

RectangularÍÍPolar

% k

coordinates (x,y) to polar coordinates (r, Set Angle mode, as necessary, before starting calculations.

displays a menu of 4 display mode settings.

displays mixed number results.

(default) displays unsimplified fractions.

displays fraction results simplified to lowest terms.

separates a whole number from the fraction in a

separates a numerator from the

before entering numerator.

simplifies a fraction using the lowest common

}

, enter the

displays

mode to display

on the entry line and the divisor

Fac

. Press % ? again to

Fac

converts a decimal or fraction to a percent.

converts between a mixed number and a

mode,

RAD

in the numerator of a fraction.

is represented as Pi in results of

34 Ö only

%% II

displays a menu to change the Angle mode to

), minutes (Å), seconds (Æ), radians (r), or

DMS

. (Angles of trigonometric functions convert values

, which converts an entry to DMS (Ä Å Æ)

DMS

%% BB AA

displays a menu of all trigonometric functions

-1

, cos, cos-1, tan, tan-1). Select the trigonometric

displays a menu of all log functions

, ln,

). Select the log function from the menu,

E <

%% kk

displays a menu to convert rectangular

) or vice versa.

US 34IIàOMà1L1àA Page 1

Stored Operations mm oo %% nn

The TI-34 Ö stores two operations,

an operation to

1. Press

OP1

% n

OP2

% p

and recall it:

and

OP1

. To store

OP2

2. Enter the operation (any combination of numbers, operators, or menu items and their arguments).

3. Press

4. entry line. The TI result (without pressing

to save the operation to memory.

recalls and displays the operation on the

34 Ö automatically calculates the

) and displays the counter

(as space permits) on the left side of the result line.

You can set the TI the result (excluding the entry). Press

% p

press

Memory

The TI-34 Ö has 5 memory variables—A, B, C,

34 Ö to display only the counter and

% n

, press ! until the = is highlighted (Ù) and

. Repeat to toggle this setting off.

zz LL %% hh{{

, and

You can store a real number or an expression that results in a real number to a memory variable.

accesses the menu of variables.

lets you store values to variables.

h recalls the values of variables.

{

Notation

% ‚

These settings restores Floating-decimal format. Set decimal places to (0–9) with

enters a value in scientific notation. Press M before

clears all variable values.

%% ‚‚

displays the decimal notation mode menu.

only

affect the display of results. F (default)

0123456789.

entering a negative exponent.

Stats

1-VAR

variable, sets with 2 measured variables— variable, and

%%tt ww vv uu

stats analyzes data from 1 data set with 1 measured

stats analyzes paired data from 2 data

X. 2-VAR

, the dependent variable. You can enter up

, the independent

to 42 data sets. Steps for defining statistical data points:

% t

1. Press The

STAT

2. Press

3. Enter a value for

. Select

indicator displays.

1-VAR

and press $.

2-VAR

and press

4. Then:

stat mode, enter the frequency of occurrence

1-VAR

(

) of the data point and press

FRQ

, the data point is ignored. Or

FRQ=0

stat mode, enter the value for

2-VAR

default=1. If

FRQ

and press $.

5. Repeat steps 3 and 4 until all data points are entered.

You must press

value entered. If you add or delete data points,

FRQ

34 Ö automatically reorders the list.

the TI

or $ to save the last data point

6. When all points and frequencies are entered:

Press

to display the menu of variables (see

table for definitions) and their current values, or

Press v to return to the blank

do calculations with data variables ( variable from the evaluate the calculation.

menu and then press < to

screen. You can

STAT

Ï, Ð

, etc.). Select a

7. When finished:

Press % t and select

points

without

exiting

STAT

Press %

variable and indicator turns off).

w <

values, and to exit

FRQ

mode, or

to clear all data

CLRDATA

to clear all data points,

STAT

mode (

STAT

Variables Definition n Number of

Mean of all X or Y values.

Sx or Sy Sample standard deviation of

x or Îy Population standard deviation of

x or Òy Sum of all

x2 or Òy

xy Sum of

Sum of all

or (

X,Y

or Y values.

for all XY pairs.

X…Y

) data points.

values.

or Y.

a Linear regression slope. b Linear regression

-intercept.

r Correlation coefficient.

' (

) Uses a and b to calculate predicted X value

2-VAR

when you input a Y value.

' (

) Uses a and b to calculate predicted Y value

2-VAR

when you input an X value.

Probability

nPr

Calculates the number of possible permutations of n items taken r at a time, given n and r. The

order of objects is important, as in a race.

nCr

Calculates the number of possible

combinations of n items taken r at a time, given n and r. The order of objects is not important, as

in a hand of cards.

RAND

A factorial is the product of the positive integers from 1 to n. n must be a positive whole number

69.



Generates a random real number between 0 and

1. To control a sequence of random numbers, store an integer (

seed value

changes randomly every time a

) ‚ 0 to rand. The

random number is generated.

RAND

Generates a random integer between 2 integers,

[

and B, where

[

B. Separate the 2

{

RAND

integers with a comma.

Errors

ARGUMENT

of arguments.

DIVIDE BY 0

¦ ¦

DOMAIN

the valid range. For example:

¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦

EQ LENGTH ERROR

for Entry Line and 47 for Stat or Constant Entry lines); for example, combining an entry with a constant that exceeds the limit.

FRACMODE FRQ DOMAIN

an integer.

while in

OVERFLOW

trigonometric, hyperbolic, or

STAT

¦ ¦

SYNTAX

more than 23 pending operations, 8 pending values, or having misplaced functions, arguments, parentheses, or commas.

— A function does not have the correct number

— You attempted to divide by 0. In statistics, n=1.

— You specified an argument to a function outside

For

: x = 0 or y < 0 and

‡

For

: y and x = 0; y < 0 and x not an integer.

For

x: x

< 0.

‡

or LN:

For For For For For

x  0.

LOG

= 90¡, -90¡, 270¡, -270¡, 450¡, etc.

TAN

SIN

nCr

COS

n or r are not integers

nPr

is not an integer between 0 and 69.

|x| > 1.

not an odd integer.

‚

— An entry exceeds the digit limits (88

— Pressing } when

value (in

—

FRQ

stats) < 0 or >99, or not

1-VAR

Fracmode=Auto

— Pressing m or o when constants not defined or

mode.

STAT

— |q| ‚ 1¯10, where

is an angle in a

function.

R4Pr(

—

Pressing When not in STAT mode, pressing v,

% w

with no defined data points.

, or

— The command contains a syntax error: entering

Battery Replacement

Replace protective cover. Place the TI

1. Using a small Phillips screwdriver, remove screws from back case.

2. Starting from the bottom, carefully separate front from back. Caution: Be careful not to damage any internal parts.

3. Using a small Phillips screwdriver, if necessary, remove old battery; replace with new one.

Caution: Avoid contact with other TI while changing the battery.

4. If necessary, press reset the TI

34 Ö (clears memory and all settings).

and

Caution: Dispose of old batteries properly. Do not incinerate batteries or leave where a child can find them.

34 Ö face down.

34 Ö components

at the same time to

In Case of Difficulty

Review instructions to be certain calculations were performed properly.

Press

and memory and settings. Check the battery to ensure that it is fresh and properly installed.

Change the battery when:

does not turn the unit on, or

The screen goes blank, or

You get unexpected results.

To continue using the TI battery:

1. Expose the solar panel to brighter light.

2. Press

calculator. This clears all settings and memory.

†

Operates in well-lit areas using solar cell. Operates in

other light settings using battery.

at the same time. This clears all

†

until you can change the

and

at the same time to reset the

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