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Question: How can I find a minimax fit using x^(1/3), x^(1/2), x, x^2, x^3?

Question:How can I find a minimax fit using x^(1/3), x^(1/2), x, x^2, x^3?

Michael Sarnoff 5 Maple
fit rational trig numapprox
March 29 2018
1

I know how to use numapprox to fit polynomial and rational polynomial approximations to trig functions.  I would like to fit a rational expression using numerators and denominators like this:

a*x^(1/3) + b*x^(1/2) + c*x^(2/3) + d*x + e*x^(3/2) + f*x^(2) + g*x^(3)

 

 
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