numpy.polynomial.chebyshev.cheb2poly()
numpy.polynomial.chebyshev.cheb2poly
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numpy.polynomial.chebyshev.cheb2poly(c)
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Convert a Chebyshev series to a polynomial.
Convert an array representing the coefficients of a Chebyshev series, ordered from lowest degree to highest, to an array of the coefficients of the equivalent polynomial (relative to the “standard” basis) ordered from lowest to highest degree.
Parameters: c : array_like
1-D a