Texas Instruments TI-34 II General Information - Page 2

US

34II

à

OM

à

1L1

à

A

Page 2

Stored Operations

m

o

%

n

p

The TI

-

34

Ö

stores two operations,

OP1

and

OP2

. To store

an operation to

OP1

or

OP2

and recall it:

1. Press

%

n

or

%

p

.

2. Enter the operation (any combination of numbers,

operators, or menu items and their arguments).

3. Press

<

to save the operation to memory.

4.

m

or

o

recalls and displays the operation on the

entry line. The TI

-

34

Ö

automatically calculates the

result (without pressing

<

) and displays the counter

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

You can set the TI

-

34

Ö

to display only the counter and

the result (excluding the entry). Press

%

n

or

%

p

, press

!

until the

=

is highlighted (

Ù

) and

press

<

. Repeat to toggle this setting off.

Memory

z

L

%

h{

The TI

-

34

Ö

has 5 memory variables—

A

,

B

,

C

,

D

,

and

E

.

You can store a real number or an expression that results

in a real number to a memory variable.

¦

z

accesses the menu of variables.

¦

L

lets you store values to variables.

¦

%

h

recalls the values of variables.

¦

%

{

clears all variable values.

Notation

%

‚

C

%

‚

displays the

decimal notation

mode menu.

These settings

only

affect the display of results.

F

(default)

restores Floating-decimal format. Set decimal places to

n

(0–9) with

0123456789.

C

enters a value in

scientific notation

. Press

M

before

entering a negative exponent.

Stats

%t

w

v

u

1-VAR

stats analyzes data from 1 data set with 1 measured

variable,

X

.

2-VAR

stats analyzes paired data from 2 data

sets with 2 measured variables—

X

, the independent

variable, and

Y

, the dependent variable. You can enter up

to 42 data sets.

Steps for defining statistical data points:

1. Press

%

t

. Select

1-VAR

or

2-VAR

and press

<

.

The

STAT

indicator displays.

2. Press

v

.

3. Enter a value for

X

1

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

2-VAR

stat mode, enter the value for

Y

1

and press

$

.

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

You must press

<

or

$

to save the last data point

or

FRQ

value entered. If you add or delete data points,

the TI

-

34

Ö

automatically reorders the list.

6. When all points and frequencies are entered:

¦

Press

u

to display the menu of variables (see

table for definitions) and their current values, or

¦

Press

v

to return to the blank

STAT

screen. You can

do calculations with data variables (

Ï

,

Ð

, etc.). Select a

variable from the

u

menu and then press

<

to

evaluate the calculation.

7. When finished:

¦

Press

%

t

and select

CLRDATA

to clear all data

points

without

exiting

STAT

mode, or

¦

Press

%

w

<

to clear all data points,

variable and

FRQ

values, and to exit

STAT

mode (

STAT

indicator turns off).

Variables

Definition

n

Number of

X

or (

X,Y

) data points.

Ï

or

Ð

Mean of all

X

or

Y

values.

Sx

or

Sy

Sample standard deviation of

X

or

Y

.

Î

x

or

Î

y

Population standard deviation of

X

or

Y

.

Ò

x

or

Ò

y

Sum of all

X

or

Y

values.

Ò

x

2

or

Ò

y

2

Sum of all

X

2

or

Y

2

values.

Ò

xy

Sum of

X

…

Y

for all

XY

pairs.

a

Linear regression slope.

b

Linear regression

Y

-intercept.

r

Correlation coefficient.

X

' (

2-VAR

)

Uses

a

and

b

to calculate predicted

X

value

when you input a

Y

value.

Y

'

(

2-VAR

)

Uses

a

and

b

to calculate predicted

Y

value

when you input an

X

value.

Probability

H

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.

!

A

factorial

is the product of the positive integers

from 1 to

n

.

n

must be a positive whole number

±

69.

RAND

Generates a random real number between 0 and

1. To control a sequence of random numbers,

store an integer (

seed value

)

‚

0 to

rand

. The

seed value

changes randomly every time a

random number is generated.

RAND

[

Generates a random integer between 2 integers,

A

and

B,

where

A

{

RAND

[

{

B

. Separate the 2

integers with a comma.

Errors

ARGUMENT

— A function does not have the correct number

of arguments.

DIVIDE BY 0

—

¦

You attempted to divide by 0.

¦

In statistics, n=1.

DOMAIN

— You specified an argument to a function outside

the valid range. For example:

¦

For

x

‡

:

x

= 0 or

y

< 0 and

x

not an odd integer.

¦

For

y

x

:

y

and

x

= 0;

y

< 0 and

x

not an integer.

¦

For

‡

x

:

x

< 0.

¦

For

LOG

or

LN

:

x

±

0.

¦

For

TAN

:

x

= 90

¡

, -90

¡

, 270

¡

, -270

¡

, 450

¡

, etc.

¦

For

SIN

-

1

or

COS

-

1

:

|

x

| > 1.

¦

For

nCr

or

nPr

:

n

or

r

are not integers

‚

0.

¦

For

x

!

:

x

is not an integer between 0 and 69.

EQ LENGTH ERROR

— An entry exceeds the digit limits (88

for Entry Line and 47 for Stat or Constant Entry lines); for

example, combining an entry with a constant that exceeds

the limit.

FRACMODE

— Pressing

}

when

Fracmode

=

Auto

.

FRQ DOMAIN

—

FRQ

value (in

1-VAR

stats) < 0 or >99, or not

an integer.

OP

— Pressing

m

or

o

when constants not defined or

while in

STAT

mode.

OVERFLOW

— |

q

|

‚

1

¯

10, where

q

is an angle in a

trigonometric, hyperbolic, or

R

4

Pr(

function.

STAT

—

¦

Pressing

u

with no defined data points.

¦

When not in

STAT

mode, pressing

v

,

u

, or

%

w

.

SYNTAX

— The command contains a syntax error: entering

more than 23 pending operations, 8 pending values, or

having misplaced functions, arguments, parentheses, or

commas.

Battery Replacement

Replace protective cover. Place the TI

-

34

Ö

face down.

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

-

34

Ö

components

while changing the battery.

4. If necessary, press

&

and

-

at the same time to

reset the TI

-

34

Ö

(clears memory and all settings).

Caution:

Dispose of old batteries properly. Do not

incinerate batteries or leave where a child can find them.

In Case of Difficulty

Review instructions to be certain calculations were

performed properly.

Press

&

and

-

at the same time. This clears all

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

-

34

Ö

†

until you can change the

battery:

1. Expose the solar panel to brighter light.

2. Press

&

and

-

at the same time to reset the

calculator. This clears all settings and memory.

†

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

other light settings using battery.

Texas Instruments TI-34 II General Information - Page 2

Stored Operations, Memory, Notation, Stats, Probability, Errors, Battery Replacement, In Case - scientific calculator

Page 2 highlights