numpy.polynomial.polynomial.polyroots(c)
Compute the roots of a polynomial.
Return the roots (a.k.a. “zeros”) of the polynomial
c : 1-D array_like
联系方式：
![p(x) = \sum_i c[i] * x^i.](https://docs.scipy.org/doc/numpy-1.13.0/_images/math/757bca86b0027288a5cc54f94f9d5b6081411bbf.png)