orthax.laguerre.lagcompanion

orthax.laguerre.lagcompanion(c)Source

Return the companion matrix of c.

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).