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
a
1. Press |
var
| to
display the VAR menu. Set
{{HOMa}},
if
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
{{VALUE}}
to make it
{{VALU«}})
and press
{{OK}}.
2-8 Mathematical Calculations