Differentiation Using Template Key

[cdmackay]

(11-19-2023 06:31 PM)ktate749 Wrote:  Now that I've deleted x it has reverted to a CAS variable, correct? Whenever I'm in Home mode I should refrain from using lower case variables in expressions, or after I'm done with them go into Mem and delete them, is that right?

Not quite.

Home and CAS modes are entirely separate; other than the possibilities to copy/paste between them, they are not connected. At least, I don't think so.

Each mode has its own global variables. If you have assigned something to a global variable, in either mode, then using that variable letter is going to use the value you have assigned to it.

My notes say, for variables:

created in Home
a := 3
4 Sto▸ b # shift P
viewed with
Home — Vars — User — User Variables — a
backspace to delete
memory manager Shift B — User Variables
scroll down for lower-case variables
select, then Delete or backspace
may also be deleted with function DelHVars()

created in CAS
a = 3
4 Sto▸ b # shift P
viewed with
CAS — Vars — CAS — All — a
backspace to delete
memory manager Shift B — CAS Vars
select, then Delete or backspace
may also be deleted with CAS function purge()
only works on CAS vars
also removes assumptions about vars, as well as value