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Computer algebra system (CAS)
CAS view
Computer algebra system (CAS)
A computer algebra system (CAS) enables you to perform
symbolic calculations. By default, CAS works in exact mode,
giving you infinite precision. On the other hand, non-CAS
calculations, such as those performed in HOME view or by an
aplet, are numerical calculations and are often
approximations limited by the precision of the calculator (to
–
12
in the case of the HP Prime). For example,
10
the approximate answer .619047619047 in Home view (with
Standard numerical format), but yields the exact answer
the CAS.
The CAS offers many hundreds of functions, covering algebra,
calculus, equation solving, polynomials, and more. You select
a function from the
discussed in chapter 20, "Functions and commands",
beginning on page 283. Consult that chapter for a
description of all the CAS functions and commands.
CAS calculations are done
in CAS view. CAS view is
almost identical to Home
view. A history of
calculations is built and you
can select and copy previous
calculations just as you can
in Home view, as well as
store objects in variables.
To open CAS view, press
of the title bar to indicate that you are in CAS view rather than
Home view.
The menu buttons in CAS view are:
: assigns an object to a variable
•
menu, one of the Toolbox menus
CAS
. CAS appears in red at the left
K
3
1
2
yields
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-- -
+
3
7
13
in
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21
51
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