Deleting Variables; Using Function Purge In The Stack In Algebraic Mode; Using Function Purge In The Stack In Rpn Mode - HP 49g+ User Manual

Deleting variables

The simplest way of deleting variables is by using function PURGE. This
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function can be accessed directly by using the TOOLS menu ( ) , or by
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using the FILES menu .
@ @ O K @ @

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 .
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@ P U R G E @ @ @ p 1 @ @
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 :
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@ P U R G E @ @ @ @ R ! @ @ @ @ @ 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
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remaining variables:

Using function PURGE in the stack in RPN mode

Assuming that our variable list contains the variables p1, z1, Q, R, and .
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We will use command PURGE to delete variable p1. Press
@ @ p 1 @ @
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. The screen will now show variable p1 removed:
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@ P U R G E @
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