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# scipy.interpolate.PchipInterpolator.antiderivative

`PchipInterpolator.``antiderivative`(nu=1)

  Construct a new piecewise polynomial representing the antiderivative.

  Parameters: | nu : int, optional Order of derivative to evaluate. (Default: 1) If negative, the derivative is returned.
  Returns: | bp : BPoly Piecewise polynomial of order k2 = k + nu representing the antiderivative of this polynomial.