numpy.polymul() in Python
The numpy.polymul() method evaluates the product of two polynomials and returns the polynomial resulting from the multiplication of two input polynomials ‘p1’ and ‘p2’.
Syntax : numpy.polymul(p1, p2)
Parameters :
p1 : [array_like or poly1D]Input polynomial 1.
p2 : [array_like or poly1D]Input polynomial 2.Return: Polynomial resulting from multiplication of the inputs.
If either input is poly1D object, then the output is also a poly1D object otherwise, 1D array of polynomial coefficients in decreasing order of degree.
Code : Python code explaining polymul()
# Python code explaining # numpy.polymul() # importing libraries import numpy as np import pandas as pd # Constructing polynomial p1 = np.poly1d([1, 2]) p2 = np.poly1d([4, 9, 5, 4]) print ("P1 : ", p1) print ("\n p2 : \n", p2) |
mul = np.polymul(p2, p1) print("\n\npoly1D object : ") print("Multiplication Result : \n", mul) |
# Defining ndarray x = np.array([1, 2]) y = np.array([4, 9, 5, 4]) mul = np.polymul(y, x) print("\n1D array : ") print("Multiplication Result : ", mul) |