How does the Bias parameter adjusts Chebyshev nodes in RationalInterpolation of the Function Approximation Package? What is the mathematical mapping/formula applied in the Bias adjustment from -1 1 for the Chebyshev nodes?


1 Answer 1


You can inspect the (well-commented) code with:


Search for "RI[f" (or "GRI[f") and find the following line to see how Bias is implemented:

xx += bias (1 - xx xx);

(The variable xx is the array of Chebyshev nodes.)


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