`numpy.polynomial.legendre:legadd`

source: build-install/usr/lib/python3.14/site-packages/numpy/polynomial/legendre.py :322

Signature

def legadd ( c1 , c2 )

Summary

Add one Legendre series to another.

Extended Summary

Returns the sum of two Legendre series c1 + c2. The arguments are sequences of coefficients ordered from lowest order term to highest, i.e., [1,2,3] represents the series P_0 + 2*P_1 + 3*P_2.

Parameters

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

Returns

out : ndarray: Array representing the Legendre series of their sum.

Notes

Unlike multiplication, division, etc., the sum of two Legendre series is a Legendre series (without having to "reproject" the result onto the basis set) so addition, just like that of "standard" polynomials, is simply "component-wise."

Examples

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

✓

L.legadd(c1,c2)

✗

Aliases

numpy.polynomial.Legendre._add
numpy.polynomial.legendre.legadd