`numpy.polynomial.polynomial:polyadd`

source: build-install/usr/lib/python3.14/site-packages/numpy/polynomial/polynomial.py :215

Signature

def polyadd ( c1 , c2 )

Summary

Add one polynomial to another.

Extended Summary

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

Parameters

c1, c2 : array_like: 1-D arrays of polynomial coefficients ordered from low to high.

Returns

out : ndarray: The coefficient array representing their sum.

Examples

from numpy.polynomial import polynomial as P
c1 = (1, 2, 3)
c2 = (3, 2, 1)

✓

sum = P.polyadd(c1,c2); sum
P.polyval(2, sum)  # 4 + 4(2) + 4(2**2)

✗

Aliases

numpy.polynomial.Polynomial._add
numpy.polynomial.polynomial.polyadd