HP 49g+ User Manual
Page 49
Page 2-16
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@@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
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@@p1@@ `
I @PURGE@. The screen will now show variable p1 removed: