CAS commands don't work



#6

Hello. I have been learning to use my new HP 50g and then I found out that I can't execute any command from the CAT menu such as EXPLN; COLLECT; FACTOR etc. For example even if I use echo of let's say EXPLN (cos(X)) it gives me exactly the same answer: EXPLN (cos(X)) and no error or anything else is mentioned on the screen. I think the problem is any of the flags, but I've tried changing everything and I still can't find how to fix this problem. I hope someone can help me.. =}


#7

Wow! That's a weird bug. The CAT list on my 49g+ has it as EXP&LN, but the command name is really EXPLN.

For this one, just type EXPLN into the command line and press ENTER.

Regards,
James


#8

PS:

Umm, no not bug after all.

The CAT choose box has both EXP&LN which invokes a menu or choose box of exponential and logarithmic operations, and EXPLN, which transforms the trigonometric terms in an expression to exponential and logarithmic terms.

But I suspect that you chose EXP&LN when you really wanted EXPLN (like I just did).

But there does seem to be a documentation bug in the AUR manual, which lists EX&LN instead of EXP&LN in the full command reference.


#9

Oops. :-)

#10

This looks very much like a problem in algebraic mode which does not occur in RPN mode.

In RPN:

'COS(X)' ENTER
EXPLN
evaluates nicely.

In ALG:

EXPLN(COS(X)) ENTER
just echoes the command. Adding single quotes or EVAL(...) around the expression doesn't do anything different. The output is always "EXPLN(COS(X))".

Is the CAS broken in ALG mode?

Another behaviour that I do not understand: If I press ' to start an algebraic expression (in RPN) and then select EXPLN from the catalog it is not echoed but executed directly on the empty expression. So EXPLN doesn't seem to be a function but a command. How do I enter commands in ALG mode?

Marcus


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP Prime: CAS taylor Alberto Candel 5 710 12-13-2013, 09:45 PM
Last Post: Alberto Candel
  HP Prime CAS curiosity bluesun08 11 1,122 12-10-2013, 01:03 PM
Last Post: Han
  [HP-Prime CAS] "Warning, ^ (Command) Is ambiguous on non square matrices"?? CompSystems 1 475 12-07-2013, 07:15 PM
Last Post: CompSystems
  HP Prime: complex numbers in CAS. Alberto Candel 1 407 12-06-2013, 02:36 PM
Last Post: parisse
  [HP Prime] plotfunc() bug in CAS Chris Pem10 2 471 12-04-2013, 02:46 PM
Last Post: Chris Pem10
  HP Prime: Home/CAS? Alasdair McAndrew 11 1,013 11-26-2013, 02:48 PM
Last Post: Alberto Candel
  HP Prime numerical precision in CAS and HOME Javier Goizueta 5 591 11-16-2013, 03:51 AM
Last Post: Paul Dale
  Need CAS help Michael de Estrada 6 614 11-13-2013, 01:29 AM
Last Post: cyrille de Brébisson
  emu48 - copy stack doesn't work (as expected) Thomas Radtke 2 543 11-11-2013, 02:19 PM
Last Post: Thomas Radtke
  HP Prime - CAS functions in Spreadsheet App CR Haeger 6 672 11-11-2013, 12:37 AM
Last Post: Michael de Estrada

Forum Jump: