HP 38g Graphing Calculator User Manual

Page 44

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Home variables retain their values regardless of context:

Home, the aplets, and the editors recognize the Home

variables and retain whatever was last stored in them. This

sharing allows you to work on the same problem in different

places (such as Home and the Function aplet) without having

to update a variable whenever it is recalculated.

If you have not stored anything in a real variable, then it

contains the value zero. (It is never “empty.”)

To access

1. Press |

var

| to

display the VAR menu. Set

{{HOMa}},

Home variable

necessary by pressing

{{HOME}}.

2. Use 0 and 0 to scroll through the alphabetical list of

categories. To skip directly to a starting letter, press a letter

key. To switch between the category list (left) and the

variable list (right), use 0 and 0.

3. Highlight the name of the variable you want.

• To copy the

name

of the variable into the edit line,

press

{{OK}}.

(NAME is set: the menu label shows

{{NAM«}}).

To copy the value of the variable into the edit line, set VALUE

(press

to make it

{{VALU«}})

and press

{{OK}}.

2-8 Mathematical Calculations