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From: babak yazdanpanah on 13 Jul 2010 13:10
Hi
I would appreciate that someone help me to find a command or code to invert a polynominal function.
thanks
From: Roger Stafford on 13 Jul 2010 13:23
"babak yazdanpanah" <babak.yazdanpanah(a)gmail.com> wrote in message <i1i6lg$4il$1(a)fred.mathworks.com>...
> Hi
> I would appreciate that someone help me to find a command or code to invert a polynominal function.
> thanks
- - - - - - - - -
I recommend that you create various polynomials of, say, fifth or sixth degree, with random coefficients and make plots of them. Then envision the problem that is encountered trying to find their inverses.

I call to your attention the 'roots' function, but you will discover that in general it will find a multiplicity of roots for any given polynomial.

Roger Stafford
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