numpy.polynomial.polynomial.polymul — NumPy v2.2 Manual (original) (raw)

polynomial.polynomial.polymul(c1, c2)[source]#

Multiply one polynomial by another.

Returns the product of two polynomials c1 * c2. The arguments are sequences of coefficients, from lowest order term to highest, e.g., [1,2,3] represents the polynomial 1 + 2*x + 3*x**2.

Parameters:

c1, c2array_like

1-D arrays of coefficients representing a polynomial, relative to the “standard” basis, and ordered from lowest order term to highest.

Returns:

outndarray

Of the coefficients of their product.

Examples

from numpy.polynomial import polynomial as P c1 = (1, 2, 3) c2 = (3, 2, 1) P.polymul(c1, c2) array([ 3., 8., 14., 8., 3.])