Re: Inverse function

*To*: mathgroup at smc.vnet.net*Subject*: [mg99349] Re: Inverse function*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Sun, 3 May 2009 05:23:25 -0400 (EDT)*References*: <gth5gc$evb$1@smc.vnet.net>

Hi, and Solve[y == 5/(2 - x), x] // FullSimplify had not worked ? too bad. Inverse[] compute the inverse matrix of the input. It would be useless to have the inverse matrix not computed and get m^(-1) instead. Regards Jens davef wrote: > I have two questions: > > 1. Is it possible to find the inveses function for one-to-one function in Mathematica 7? > > For example the inverse of 5/(2-x) is 2-(5/x). I have tried Inverse and InverseFunction but I cannot produce the inverse function. > > Can anyone explain how to get Mathematica to produce this result? (See attached output screenshot.) > > > 2. Is it possible to change the format of the output for a recprical? > > For example, instead of writing the output of Inverse[5/(2-x)] as (5/(2-x))^-1, can the output be set to produce (2-x)/5? >