Calculator User Manual

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 1002CATVAR.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

Enter a value, which can be an expression. - ~
5
I

Enter ¶ (the store symbol) next to the value. X

Create a variable name one to eight characters
long, starting with a letter. ALPHA-lock is on.
ã
A
ä ã
R
ä ã
E
ä ã
A
ä

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
ã
=
ä
, 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=M¹A
.
When you use
=
,
variable
is
first, then
=
, then
expression
.
In contrast, when you use
¶
,
value
is first, then
¶
, then
variable
.