HP Prime Graphing NW280AAABA manual Computer algebra system CAS

To use an expression or result from Home view

To use a Home variable in CAS

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).

When your are working in CAS, you can retrieve an expres- sion or result from Home view by tapping Zand 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.

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.

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