Texas Instruments TI-89 사용자 설명서

Operating the Calculator

 197

3. Move the 8 indicator to the function or program, and press ¸.

Storing and Recalling Variable Values

Storing and Recalling Variable Values

Storing and Recalling Variable Values

Storing and Recalling Variable Values

When you store a value, you store it as a named variable. You can then use the name 
instead of the value in expressions. When the calculator encounters the name in an 
expression, it substitutes the variable’s stored value.

Rules for Variable Names

Rules for Variable Names

Rules for Variable Names

Rules for Variable Names

A variable name:

•

Can use 1 to 8 characters consisting of letters and digits. This includes Greek letters 
(but not p), accented letters, and international letters. 

-

Do not include spaces.

-

The first character cannot be a digit.

•

Can use uppercase or lowercase letters. The names 

, 

, 

, and 

 all 

refer to the same variable.

8

One function or program at a time

D

 or 

C

One page at a time

2 D

 or 

2 C

To the first function or program that 
begins with a specified letter

The letter key. (On the TI-89 
Titanium, do not press 

j

 first. If 

you do, you need to press 

j

 or 

2 ™

 again before you can 

type a letter.)