numpy.polynomial.polynomial.polypow

numpy.polynomial.polynomial.polypow(c, pow, maxpower=None) [source]

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

carray_like

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

powinteger

Power to which the series will be raised

maxpowerinteger, optional

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

Returns

coefndarray

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.])