numpy.polynomial.hermite_e.hermemulx — NumPy v1.13 Manual (original) (raw)
numpy.polynomial.hermite_e. hermemulx(c)[source]¶
Multiply a Hermite series by x.
Multiply the Hermite series c by x, where x is the independent variable.
| Parameters: | c : array_like 1-D array of Hermite series coefficients ordered from low to high. |
|---|---|
| Returns: | out : ndarray Array representing the result of the multiplication. |
Notes
The multiplication uses the recursion relationship for Hermite polynomials in the form
xP_i(x) = (P_{i + 1}(x) + iP_{i - 1}(x)))
Examples
from numpy.polynomial.hermite_e import hermemulx hermemulx([1, 2, 3]) array([ 2., 7., 2., 3.])