Problems in numerical chebyshev approximation by interpolating rationals
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We describe some theory and practice for the problem of real Chebyshev approximation to a continuous function f(x) whose zeros (if any) in the range of interest are known. Our typical approximant is of the form B(x) (P(x)/Q(x))P, where B(x) is a specified continuous function having the same zeros as f(x), p is specified and P(x), Q(x) are polynomials.
KeywordsError Curve Levelling Equation Exchange Algorithm Decimal Digit Chebyshev Approximation
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