Approximations by polynomials and rational functions in Bernstein form

[peteroupc]

https://peteroupc.github.io/bernapprox.html

This page describes how to compute a polynomial in Bernstein form that comes close to a function $f(\lambda)$ with a user-defined error tolerance, so that the polynomial's coefficients will lie in the closed unit interval if $f$'s values lie in that interval. The polynomial is often simpler to calculate than the original function $f$ and can often be accurate enough for an application's purposes.

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