Hp 50g Graphing Calculator Instrukcja Użytkownika Pobierz pdf (Strona 122)

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variable p1. Press I @PURGE@ J@@p1@@ `. The screen will now show

variable p1 removed:

You can use the PURGE command to erase more than one variable by placing

their names in a list in the argument of PURGE. For example, if now we wanted

to purge variables R and Q, simultaneously, we can try the following exercise.

Press :

I @PURGE@ „ä³ J@@@R!@@ ™ ‚í ³ J@@@Q!@@

At this point, the screen will show the following command ready to be executed:

To finish deleting the variables, press `. The screen will now show the

remaining variables:

Using function PURGE in the stack in RPN mode

We start again at subdirectory {HOME MANS INTRO} containing variables

p1, z1, Q, R, and

. We will use command PURGE to delete variable p1.

Press ³@@p1@@ ` I @PURGE@. The screen will now show variable p1

removed:

To delete two variables simultaneously, say variables R and Q, first create a list

(in RPN mode, the elements of the list need not be separated by commas as in

Algebraic mode): J „ä³ @@@R!@@ ™³@@@Q!@@ `. Then, press

I@PURGE@ use to purge the variables.

UNDO and CMD functions

Functions UNDO and CMD are useful for recovering recent commands, or to

revert an operation if a mistake was made. These functions are associated with

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