Re: Simplify exponents in output

*To*: mathgroup at smc.vnet.net*Subject*: [mg99236] Re: [mg99155] Simplify exponents in output*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Thu, 30 Apr 2009 06:25:12 -0400 (EDT)*Reply-to*: hanlonr at cox.net

expr = (64 x^9)^(1/3) 4*(x^9)^(1/3) Assuming[{x >= 0}, Simplify[expr]] 4*x^3 Simplify[expr, x >= 0] 4*x^3 {expr, 4 x^3} /. x -> 3 {108, 108} {expr, 4 x^3} /. x -> -3 {108*(-1)^(1/3), -108} % // N {54.000000000000014 + 93.53074360871936*I, -108.} Bob Hanlon ---- davef <davidfrick2003 at yahoo.com> wrote: ============= When I attempt to solve the following in Mathematica: (64 x^9)^(1/3) I get this: 4 (x^9)^1/3 Why don't I get: 4x^3 IOW, why doesn't Mathematica simplify the variable under the radical in the output? I am using Mathematica 7. Thanks.