`numpy.polynomial.laguerre:lagmul`

source: build-install/usr/lib/python3.14/site-packages/numpy/polynomial/laguerre.py :441

Signature

def lagmul ( c1 , c2 )

Summary

Multiply one Laguerre series by another.

Extended Summary

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

Parameters

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

Returns

out : ndarray: Of Laguerre series coefficients representing their product.

Notes

In general, the (polynomial) product of two C-series results in terms that are not in the Laguerre polynomial basis set. Thus, to express the product as a Laguerre series, it is necessary to "reproject" the product onto said basis set, which may produce "unintuitive" (but correct) results; see Examples section below.

Examples

from numpy.polynomial.laguerre import lagmul
lagmul([1, 2, 3], [0, 1, 2])

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Aliases

numpy.polynomial.Laguerre._mul
numpy.polynomial.laguerre.lagmul