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Re: Simple question about inverse of a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg122585] Re: Simple question about inverse of a function
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Wed, 2 Nov 2011 06:22:06 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201111010501.AAA14719@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

It works perfectly here (with an error beep you can ignore), and this does  
the same... without the beep:

Clear[f, g]
f[theta_][t_] := (1 - t)^theta
g[theta_] = Quiet@InverseFunction[f[theta]]

1 - #1^(1/theta) &

$Version

"8.0 for Mac OS X x86 (64-bit) (October 5, 2011)"

Bobby

On Tue, 01 Nov 2011 00:01:55 -0500, Mikael  
<mikaen.anderson.1969 at gmail.com> wrote:

> 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]]]
>


-- 
DrMajorBob at yahoo.com



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