HP 48gII Manuel d'utilisateur télécharger pdf (Page 49)

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Deleting variables

The simplest way of deleting variables is by using function PURGE. This

function can be accessed directly by using the TOOLS menu (I), or by

using the FILES menu „¡@@OK@@ .

Using function PURGE in the stack in Algebraic mode

Our variable list contains variables p1, z1, Q, R, and

. We will use

command PURGE to delete variable p1. Press I @PURGE@ J@@@@ `.

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@@@!@@

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

Assuming that our variable list contains the variables p1, z1, Q, R, and

We will use command PURGE to delete variable p1. Press

³@@@@

I @PURGE@

. The screen will now show variable p1 removed:

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HP 48gII Manuel d'utilisateur Page 49