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Re: Re: can't MATHEMATICA simplify simple expressions?
But one should use PowerExpand with caution! As the HelpBrowser entry says: PowerExpand converts (a b)^c to a^c b^c, whatever the form of c is. PowerExpand also converts (a^b)^c to a^(b c), whatever the form of c is. The transformations made by PowerExpand are correct in general only if c is an integer or a and b are positive real numbers. Jens-Peer Kuska wrote: > Hi, > > a) because only for real vaules youn get a^3 > b) PowerExpand[(a^2)^(3/2) ] doesn what you want > > Regards > Jens > > "Cole Turner" <REMOVEcole.tuner at liwest.at> schrieb im Newsbeitrag > news:cl4tg0$8g7$1 at smc.vnet.net... > >>if I enter: >> >>FullSimplify [ (a^2)^(3/2) ] >> >>(in correct MATHEMATICA syntax, the program does not yield the correct >>result, a^3 ... >> >>why is that? -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305