       Finding inverse of non-linear transformation

• To: mathgroup at smc.vnet.net
• Subject: [mg116408] Finding inverse of non-linear transformation
• From: "Christopher O. Young" <cy56 at comcast.net>
• Date: Sun, 13 Feb 2011 05:50:55 -0500 (EST)

```I'm trying to find the inverse of the simple non-linear transformation

(a x + b x + c) ({
{x},
{y}})

I'm trying to use this as a sort of counter-example to the usual projective
transformation, which has the polynomial in the denominator. Does
Mathematica have a way to do this? InverseFunction doesn't seem to work
here.

In:= F[x_, y_, a, b, c] := (a x + b x + c) ( {  {x},  {y}  } )

In:= InverseFunction[[x_, y_, a, b, c]]

During evaluation of In:= Part::pspec: Part specification x_ is neither
an integer nor a list of integers. >>

Out= InverseFunction[[x_, y_, a, b, c]]

Any help very much appreciated.

Chris Young
cy56 at comcast.net

```

• Prev by Date: Arbitrary tick label for approximation layer in WaveletListPlot?
• Next by Date: Re: k-permutations enumeration
• Previous by thread: Re: Arbitrary tick label for approximation layer in WaveletListPlot?
• Next by thread: Re: Finding inverse of non-linear transformation