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bundles / numpy 2.5.0.dev0+git20251130.2de293a / numpy / polynomial / laguerre / lagcompanion

function

numpy.polynomial.laguerre:lagcompanion

source: build-install/usr/lib/python3.14/site-packages/numpy/polynomial/laguerre.py:1421

Signature

def lagcompanion(c)

Summary

Return the companion matrix of c.

Extended Summary

The usual companion matrix of the Laguerre polynomials is already symmetric when c is a basis Laguerre polynomial, so no scaling is applied.

Parameters

c : array_like

1-D array of Laguerre series coefficients ordered from low to high degree.

Returns

mat : ndarray

Companion matrix of dimensions (deg, deg).

Examples

from numpy.polynomial.laguerre import lagcompanion
✓
lagcompanion([1, 2, 3])
✗
array([[ 1.    , -0.3333],
       [-1.    ,  4.3333]])

Aliases

  • numpy.polynomial.laguerre.lagcompanion