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2-D Chebyshev Polynomial Regression


Math Group,

Has anyone created a function in Mathematica to approximate a function 
of two variables using 2-D Chebyshev Polynomial Regression?

That is, has someone created a Mathematica algorithm which takes as its
input a real valued function f(x,y) defined on [a,b] X [c,d] and
returns a Chebyshev polynomial approximation p(x,y)?

If so, I would be interested in obtaining it.

Thanks,

Chris Farr





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