HP Prime Graphing Wireless Calculator - Manual (Page 176)

172 Functions and commands
F1(X) is drawn in the Plot view and has a column of function
values in the Numeric view of the Function app. With another
app as the current app, you would have to enter
Function.CHECK(1).
UNCHECK Un-Check. Un-checks—that is, deselects—the Symbolic view
variable corresponding to Digit. Used primarily in
programming to de-activate symbolic view definitions in apps.
UNCHECK(Digit)
Example:
With the Sequence app as the current app, UNCHECK(2) un-
checks the Sequence app Symbolic view variable U2. The
result is that U2(N) is no longer drawn in Plot view and has
no column of values in the Numeric view of the Sequence
app. With another app as the current app, you would have to
enter Sequence.UNCHECK(2).
ISCHECK Test for check. Tests whether a Symbolic view variable is
checked. Returns 1 if the variable is checked and 0 if it is not
checked.
ISCHECK(Digit)
Example:
With the Function app as the current app, ISCHECK(3)
checks to see if F3(X) is checked in the Symbolic view of the
Function app.
Ctlg menu
The Catlg menu brings
together all the functions and
commands available on the
HP Prime. However, this
section describes the
functions and commands
that can only be found on
the
Catlg menu. The
functions and commands that are also on the Math menu are
described in “Keyboard functions” on page 101. Those that
are also on the
CAS menu are described in “CAS menu” on
page 116. The functions and commands specific to the
Geometry app are described in “Geometry functions and