HP Prime G2 and CAS cosmetics (cube root)

01102022, 08:40 AM
Post: #1




HP Prime G2 and CAS cosmetics (cube root)
Hello, I am new to this forum.
I got a new HP Prime G2. Nice machine! Already updated it to SW version: 2.1.14603 (2021 12 02) (HW ver. D; CAS v1.5.0; OS V2.060.650) I have a question about CAS display output. In the HOME settings I have "Textbook Display" and "Intelligent Math" checked. In CAS, Square Roots display very nice in input and output, but cube roots display as fractions (i.e. 1/3). The question is if this is working as designed (written), or if am I doing something wrong, missing an option/combination. To be more clear, I can enter a cube root (Shift+Xy) where the "3" is left of the radical sign, but the output is alwasy in fraction format. Comments and/or suggestions would be very much appreciated. 

01122022, 09:46 AM
Post: #2




RE: HP Prime G2 and CAS cosmetics (cube root)
I can't seem to replicate what you're describing.
Would you mind posting a screenshot of the settings pages for Home and CAS, as well as one showing the fractional display behavior? 

01122022, 01:54 PM
Post: #3




RE: HP Prime G2 and CAS cosmetics (cube root)
(01122022 09:46 AM)IHarwell Wrote: I can't seem to replicate what you're describing. Shift Home Settings, page down, Textbook Display: ON Shift Home Settings, page down, Textbook Display: OFF <0ΙΈ0> Joe 

01122022, 02:24 PM
Post: #4




RE: HP Prime G2 and CAS cosmetics (cube root)  
01132022, 09:47 PM
Post: #5




RE: HP Prime G2 and CAS cosmetics (cube root)
I'm not sure how to get it to show the root form with numbers. I would be surprised if there were a way based on what I found looking into the issue.
This also happens with the official build of xcas that the HP Prime uses. While the Prime has a custom formatting system that sits on top of xcas, they probably missed this case since xcas gives very different answers for these two cases. ** For any HP programmers out there ** If I were to hazard a guess, I'd probably check the textbook formatting algorithm to make sure it looks for "1/_" form exponents as well as the xcas "surd" or "NTHROOT" function and displays them as nth roots. In the case of "1/_", it should probably revert to "NTHROOT" form when the "_" is either a symbolic leaf, a constant, or an integer/integerlike number. This would probably need a new option to control the behavior, though. 

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