Manual

424 Variables

you evaluate that result (using the EVAL command), the

CAS will now return {2,4,6}.

User variables are explicitly created by the user. You

create user variables either in a program or by assignment

in Home view. User variables created in a program are

either declared as local or exported as global. User

variables created by assignment or exported from a

program will show up in the

Vars User menu. Local

variables exist only within their own program.

The following sections describe the various processes

associated with variables, such as creating them, storing

objects in them, and retrieving their contents. The rest of

the chapter contains tables that list all the Home and app

variable names.

Working

with Home

variables

Example 1: Assign 

to the Home variable A and then

calculate 5*A.

1. P r e s s H to display Home view.

2. Assign 

to A:

Szj AaE

The result is written

to history.

3. Multiply A by 5:

AaE

This example illustrates

the process for storing

and using any Home variable, not just the Real Home

variables A–Z. It is important to match the object you want

to store to the correct type of Home variable. See “Home

variables” on page 428 for details.