Builtin CAS Variables?

02142014, 05:01 PM
Post: #1




Builtin CAS Variables?
The HP Prime User Guide mentions on page 43 the builtin CAS variables:
"(...)However, the builtin CAS variables must be entered in lowercase.(...)" While you can access the builtin Home variables via Vars > Home I am asking myself where I can access the builtin CAS variables if there are any...? Builtin variables in CAS I have found so far: e, pi, i It's a very basic question, I know ;) . Many thanks for you help. Regards, Dominik 

02142014, 06:38 PM
Post: #2




RE: Builtin CAS Variables?
Shift+C, tap [Const]
My website: erwin.ried.cl 

02142014, 10:54 PM
Post: #3




RE: Builtin CAS Variables?
Just being picky here: Those are constants, not varyables. The only CAS variables that I know of (they only work in CAS) are:
Digits  the value in CAS Settings, page 1, end of line 2 epsilon  the value in CAS Settings, page 2, line 4 Digits can be set to any integer 1 to 13 (13 shows as 12 in CAS Settings). CAS doesn't like epsilon to be anything larger than 1E6. If you set it to something larger than 1E6, CAS will reset it to 1E6. Those two are the only CAS variables listed on this page: http://holyjoe.net/hp/PrimeVars.htm If any more are discovered, I'll add them to that list. The User Guide refers to "builtin CAS variables named a to z". That's incorrect. In CAS, a through z do not exist until you create them, and when you purge them, they no longer exist... just like any other usercreated CAS variable. That's different from Digits and epsilon, which always exist and cannot be purged. <0ΙΈ0> Joe 

02152014, 06:49 AM
Post: #4




RE: Builtin CAS Variables?
Joe,
Many thanks for your reply and the provided background information. This is very useful for me! Further, I have just bookmarked your HP Prime Vars list. All the best, Dominik 

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