HP Prime can't find how to use partfrac function !

[dg1969]

Hi,

When I try the example include with the help of "partial fraction" in the emulator : 2013-8-13 (5106) CAS 1.1.0

CAS>Algebra>Partial Fraction

partfrac(x/(4-x^2)) the emulator answer : -x/(x^2-4) !!

in place of (-1/2)/(x-2) + (-1/2)/(x+2)

I'm missing something ?

[CompSystems]

must be disabled the automatic simplification, also happens to factor() cmd

[dg1969]

Thank's !! It's Ok with "simplify level fixed at minimum"...

And thank you mister Parisse for the partfrac shortcut : sto +

Edited: 4 Oct 2013, 9:22 a.m.

[Joe Horn]

Quote:

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And thank you mister Parisse for the partfrac shortcut : sto +

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And thanks too, Bernard, for the CAS factoring shortcut: sto *

153 sto * Enter --> 3^2*17

x^4-1 sto * Enter --> (x-1)*(x+1)*(x^2+1)

(Note: the sto * shortcut doesn't use i to factor polynomials, even if that flag is set in CAS Settings)