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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?
> 


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