The Museum of HP Calculators

HP Forum Archive 21

[ Return to Index | Top of Index ]

HP Prime - Variable problem
Message #1 Posted by bluesun08 on 7 Nov 2013, 6:54 a.m.

1. Suppose i want store the number 25 in CAS in Variable "RE". After pressing 25 Sto RE the calculator says POLYFORM(25,'RE') , why??, whats wrong?
2. Suppose i want store the number 25 in CAS in Variable "re". After pressing 25 Sto re the calculator gives a error message, why??, whats wrong?
After working some time with variables in my opinion the variable-management in HP Prime is VERY confusing or rather disastrous.

Edited: 7 Nov 2013, 8:42 a.m.

      
Re: HP Prime - Variable problem
Message #2 Posted by Michael de Estrada on 7 Nov 2013, 9:19 a.m.,
in response to message #1 by bluesun08

1. "RE" is the name of the built-in function to extract the real part of a complex number, so you can't treat it as a variable. Try entering RE(3+4i) and the result will be 3. 2. "re" is syntactically incorrect as per 1. above since it should be capitalized. Try entering re(3+4i) and it will display on the input (left) side of the screen as RE(3+4i).

Basically names reserved for functions that are listed in the function catalog cannot be defined as user variables.

Edited: 7 Nov 2013, 9:49 a.m. after one or more responses were posted

            
Re: HP Prime - Variable problem
Message #3 Posted by bluesun08 on 7 Nov 2013, 9:43 a.m.,
in response to message #2 by Michael de Estrada

... oh my god. and where can i find this function catalog?

                  
Re: HP Prime - Variable problem
Message #4 Posted by Tim Wessman on 7 Nov 2013, 9:46 a.m.,
in response to message #3 by bluesun08

toolbox->catalog

TW

                        
Re: HP Prime - Variable problem
Message #5 Posted by bluesun08 on 7 Nov 2013, 11:27 a.m.,
in response to message #4 by Tim Wessman

Navigation trough the catalog is in spite of multi-touch tedious. Is it possible to navigate quickly by input a letter (as in HP50g) or get the catalog in print-form?

                              
Re: HP Prime - Variable problem
Message #6 Posted by Tim Wessman on 7 Nov 2013, 11:29 a.m.,
in response to message #5 by bluesun08

The alpha indicator is on... so type your characters.

TW

                                    
Re: HP Prime - Variable problem
Message #7 Posted by bluesun08 on 7 Nov 2013, 11:36 a.m.,
in response to message #6 by Tim Wessman

o.k. that works. But it would be amazing and user friendly if the alpha indicator is automatically on when i entered the catalog (as in HP50g).

                                          
Re: HP Prime - Variable problem
Message #8 Posted by Tim Wessman on 7 Nov 2013, 11:46 a.m.,
in response to message #7 by bluesun08

It does, at least in 5106 which is the first release version and should have come on your calculator.

TW

Edited: 7 Nov 2013, 12:04 p.m.

                                                
Re: HP Prime - Variable problem
Message #9 Posted by bluesun08 on 7 Nov 2013, 12:27 p.m.,
in response to message #8 by Tim Wessman

Thats curious: I have 5106 ...

                                                      
Re: HP Prime - Variable problem
Message #10 Posted by Tim Wessman on 7 Nov 2013, 2:14 p.m.,
in response to message #9 by bluesun08

Is that with the menu tab "Catalog" open showing the hundreds of entries (F5 using the 50g menu key position name)? It wont' be turned on for the others since they have numerical/alphanumerical hotkeys by default.

TW

                                    
Re: HP Prime - Variable problem
Message #11 Posted by Michael de Estrada on 7 Nov 2013, 11:39 a.m.,
in response to message #6 by Tim Wessman

When I type the characters, it simply takes me to the first letter, and then the next first letter. So, if I type RE, it first takes me to the beginning of the R functions (radical_axis) and then to the beginning of the E functions (e).

                                          
Re: HP Prime - Variable problem
Message #12 Posted by Mark Hardman on 7 Nov 2013, 12:52 p.m.,
in response to message #11 by Michael de Estrada

Typing the two letters in quick succession will move you to "RE".

            
Re: HP Prime - Variable problem
Message #13 Posted by bluesun08 on 7 Nov 2013, 11:34 a.m.,
in response to message #2 by Michael de Estrada

If I understand aright all Home-built-in functions will converted in capital letters when i input them in small letters in CAS or HOME-View?

[ Return to Index | Top of Index ]

Go back to the main exhibit hall