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Storing a value to a variable name, Storing an unevaluated expression – Texas Instruments TI-86 User Manual

Page 52

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40

Chapter 2: The

CATALOG

, Variables, and Characters

02CATVAR.DOC TI-86, Chap 2, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 3:00 PM Page 40 of 10

02CATVAR.DOC TI-86, Chap 2, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 3:00 PM Page 40 of 10

Storing a Value to a Variable Name

ᕡ Enter a value, which can be an expression.

- ~

5

I

ᕢ Enter ¶ (the store symbol) next to the value.

X

ᕣ Create a variable name one to eight characters

long, starting with a letter. ALPHA-lock is on.

ã

A

д г

R

д г

E

д г

A

ä

ᕤ Store the value to the variable. The value

stored to the variable is displayed as a result.

b

Storing an Unevaluated Expression

When you store an expression to memory using X (with the ¶ sign), the expression is
evaluated and the result is stored to a variable.

When you store an unevaluated expression using 1

г

=

д, or the equation editor

(Chapter 5), or the equation solver (Chapter 15), the unevaluated expression is stored to an
equation variable.

To store an unevaluated expression on the home screen or in a program, the syntax is:

variable

=

expression

where variable always precedes the equals sign and expression always follows the equals sign.

You can use

=

to store a mathematical expression to an equation variable. For example,

F=M

¹

A

.

When you use =,

variable

is

first, then =, then

expression

.

In contrast, when you use

,

value

is first, then

, then

variable

.