bundles / numpy 2.4.4 / numpy / polymul
_ArrayFunctionDispatcher
numpy:polymul
Signature
def polymul ( a1 , a2 ) Summary
Find the product of two polynomials.
Extended Summary
Finds the polynomial resulting from the multiplication of the two input polynomials. Each input must be either a poly1d object or a 1D sequence of polynomial coefficients, from highest to lowest degree.
Parameters
a1, a2: array_like or poly1d objectInput polynomials.
Returns
out: ndarray or poly1d objectThe polynomial resulting from the multiplication of the inputs. If either inputs is a poly1d object, then the output is also a poly1d object. Otherwise, it is a 1D array of polynomial coefficients from highest to lowest degree.
Examples
import numpy as np np.polymul([1, 2, 3], [9, 5, 1])✓
p1 = np.poly1d([1, 2, 3]) p2 = np.poly1d([9, 5, 1]) print(p1) print(p2) print(np.polymul(p1, p2))✓
See also
- convolve
Array convolution. Same output as polymul, but has parameter for overlap mode.
- poly
- poly1d
A one-dimensional polynomial class.
- polyadd
- polyder
- polydiv
- polyfit
- polyint
- polysub
- polyval
Aliases
-
numpy.polymul