This is documentation for an old release of NumPy (version 1.19). Read this page in the documentation of the latest stable release (version 2.2).
numpy.polynomial.polynomial.polycompanion¶
-
numpy.polynomial.polynomial.polycompanion(c)[source]¶ Return the companion matrix of c.
The companion matrix for power series cannot be made symmetric by scaling the basis, so this function differs from those for the orthogonal polynomials.
- Parameters
- carray_like
1-D array of polynomial coefficients ordered from low to high degree.
- Returns
- matndarray
Companion matrix of dimensions (deg, deg).
Notes
New in version 1.7.0.