numpy.polynomial.polynomial.polymul

polynomial.polynomial.polymul(c1, c2)

用一个多项式乘以另一个。

返回两个多项式的乘积 c1 * c2. The arguments are sequences of coefficients, from lowest order term to highest, e.g., [1,2,3] represents the polynomial 1 + 2* X+ 3 *x* *2.

参数

C1，C2array_like

代表多项式的一维系数数组，相对于“标准”基，从最低阶项到最高阶项。

返回

out恩达雷

它们乘积的系数。

参见

polyadd, polysub, polymulx, polydiv, polypow

实例

>>> from numpy.polynomial import polynomial as P
>>> c1 = (1,2,3)
>>> c2 = (3,2,1)
>>> P.polymul(c1,c2)
array([  3.,   8.,  14.,   8.,   3.])

numpy.polynomial.polynomial.polymulx numpy.polynomial.polynomial.polydiv