Raise a Chebyshev series to a power.
Returns the Chebyshev series 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 T_0 + 2*T_1 + 3*T_2.
c : array_like
pow : integer
maxpower : integer, optional
coef : ndarray