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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
α
. 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
α
.
We will use command PURGE to delete variable p1. Press
³@@@@
`
I @PURGE@
. The screen will now show variable p1 removed: