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# numpy.polynomial.polynomial.Polynomial.deriv

`Polynomial.``deriv`(m=1)

  Differentiate.

  Return a series instance of that is the derivative of the current series.

  Parameters: | m : non-negative int The number of integrations to perform.
  Returns: | new_series : series A new series representing the derivative. The domain is the same as the domain of the differentiated series.