Re: Simple question about inverse of a function

*To*: mathgroup at smc.vnet.net*Subject*: [mg122636] Re: Simple question about inverse of a function*From*: Alois Steindl <Alois.Steindl at tuwien.ac.at>*Date*: Fri, 4 Nov 2011 06:00:04 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <j8tl31$f3e$1@smc.vnet.net>

Am 03.11.2011 09:58, schrieb Mikael: > Sorry David, everything is fine with your solution. I had "Break at Messages" ticked and that caused my confusion. > > My sincere thanks to all who responded. > > Mikael > >> Thanks David for your reply but unfortunately the >> solution does not work for me. I am running >> Mathematica 8 under Windows 7 and the last expression >> below does not result in any solution for me (I >> waited several minutes). This is a copy of my >> notebook which is exactly what you suggested: >> >> Clear[f,g] >> conditions=0<=t<=1&&1<=theta<=Infinity; >> f[theta_][t_]:=(1-t)^theta >> g[theta_]=Assuming[conditions,InverseFunction[f[theta] >> ]] >> > Hello, for me it worked immediately (also Win 7, Mathematica 8 (8.0.1)) and gave 1 - #1^(1/theta) & Now g[\[Theta]][u] gives 1 - u^(1/\[Theta]) Maybe it helps to start a fresh session. Alois