scipy.interpolate.PiecewisePolynomial.derivatives

PiecewisePolynomial.derivatives(x, der)[source]

Evaluate a derivative of the piecewise polynomial

Parameters :

x : scalar or array_like of length N

der : integer

how many derivatives (including the function value as 0th derivative) to extract

Returns :

y : array_like of shape der by R or der by N or der by N by R

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