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Computer algebra system (CAS) 59
functions to be presented by their command name, deselect
the Menu Display option on the second page of the Home
Settings screen (see “Home settings” on page 30).
To use an
expression or
result from
Home view
When your are working in CAS, you can retrieve an expres-
sion or result from Home view by tapping
Z and selecting
Get from Home. Home view opens. Press
=
or
\
until
the item you want to retrieve is highlighted and press
E.
The highlighted item is copied to the cursor point in CAS.
To use a Home
variable in CAS
You can access Home variables from within the CAS. Home
variables are assigned uppercase letters; CAS variables are
assigned lowercase letters. Thus SIN(x) and SIN(X) will yield
different results.
To use a Home variable in the CAS, simply include its name
in a calculation. For example, suppose in Home view you
have assigned variable Q to 100. Suppose too that you have
assigned variable q to 1000 in the CAS. If you are in the CAS
and enter 5*q, the result is 5000. If you had entered 5*Q
instead, the result would have been 500.
In a similar way, CAS variables can be used in calculations
in Home view. Thus you can enter 5*q in Home view and get
5000, even though q is a CAS variable.