# numpy.polynomial.polynomial.polypow

polynomial.polynomial.polypow(c, pow, maxpower=None)

  Raise a polynomial to a power.

  Returns the polynomial c raised to the power pow. The argument c is a sequence of coefficients ordered from low to high. i.e., [1,2,3] is the series `1 + 2*x + 3*x**2.`

  Parameters:
    c array_like

      1-D array of array of series coefficients ordered from low to high degree.

    pow integer

      Power to which the series will be raised

    maxpower integer, optional

      Maximum power allowed. This is mainly to limit growth of the series to unmanageable size. Default is 16

  Returns:
    coef ndarray

      Power series of power.

  See also

  `polyadd`, `polysub`, `polymulx`, `polymul`, `polydiv`

  Examples

      >>> from numpy.polynomial import polynomial as P
      >>> P.polypow([1,2,3], 2)
      array([ 1., 4., 10., 12., 9.])