Solving "identification" problems



Maybe you would like to write a general purpose function that does this. It
might
be possible to call such an extension from to_poly_solve in some nice way.

Barton

-----maxima-bounces at math.utexas.edu wrote: -----

>To:?maxima at math.utexas.edu
>From:?Ulf?Ekstr?m?<uekstrom at gmail.com>
>Sent?by:?maxima-bounces at math.utexas.edu
>Date:?11/08/2009?11:32AM
>Subject:?[Maxima]?Solving?"identification"?problems
>
>Dear?all,
>I?am?trying?to?make?Maxima?identify?terms?for?me,?for?example
>
>solve(x*y=a*(x+y)^2+b*(x-y)^2,[a,b]);
>
>which?I?would?like?to?give?me?a=1/4,?b=-1/4.?However,?it?seems?that
>solve()
>is?not?really?made?for?this?kind?of?equations[1].?Is?there?any?other
>function
>I?can?use?for?these?problems?
>
>Sincerely,
>Ulf?Ekstr?m,?VU?University?Amsterdam
>
>[1]?I?get:?[[a=-(%r3*y^2+(-2*%r3-1)*x*y+%r3*x^2)/(y^2+2*x*y+x^2),b=%r3]]
>
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