numpy.polynomial.polynomial.polycompanion — NumPy v1.13 Manual (original) (raw)
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: | c : array_like 1-D array of polynomial coefficients ordered from low to high degree. |
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| Returns: | mat : ndarray Companion matrix of dimensions (deg, deg). |
Notes
New in version 1.7.0.