Re: can't MATHEMATICA simplify simple expressions?

*To*: mathgroup at smc.vnet.net*Subject*: [mg51520] Re: [mg51505] can't MATHEMATICA simplify simple expressions?*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Thu, 21 Oct 2004 22:20:27 -0400 (EDT)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

Because ((-2)^2)^(3/2) == (-2)^3 False Reduce[(a^2)^(3/2) == a^3, a, Reals] a >= 0 Consequently, if you restrict a to being non-negative: Simplify[(a^2)^(3/2), a>=0] a^3 (a^2)^(3/2) // PowerExpand a^3 Bob Hanlon > > From: Cole Turner <REMOVEcole.tuner at liwest.at> To: mathgroup at smc.vnet.net > Date: 2004/10/20 Wed AM 01:21:32 EDT > To: mathgroup at smc.vnet.net > Subject: [mg51520] [mg51505] can't MATHEMATICA simplify simple expressions? > > 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? > > thanks! > -- > Johnny: [plugging back in the runway lights] > "Just kidding." > ('Airplane!', 1980) > > Bob Hanlon Chantilly, VA