Compute a definite integral over a piecewise polynomial.
a : float
Lower integration bound
b : float
Upper integration bound
extrapolate : bool, optional
Whether to extrapolate to ouf-of-bounds points based on first and last intervals, or to return NaNs.
ig : array_like
Definite integral of the piecewise polynomial over [a, b]
scipy.interpolate.PPoly.antiderivative
scipy.interpolate.PPoly.roots
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