numpy.roots()函数Python
numpy.roots()
函数返回多项式的根,其系数在 p 中给出。 rank-1 数组 p 中的值是多项式的系数。如果 p 的长度为 n+1,则多项式描述为: p[0] * x**n + p[1] * x**(n-1) + ... + p[n-1]*x + p[n]
Syntax : numpy.roots(p)
Parameters :
p : [array_like] Rank-1 array of polynomial coefficients.
Return : [ndarray] An array containing the roots of the polynomial.
代码#1:
# Python program explaining
# numpy.roots() function
# importing numpy as geek
import numpy as geek
p = [1, 2, 3]
gfg = geek.roots(p)
print (gfg)
输出 :
[-1.+1.41421356j -1.-1.41421356j]
代码#2:
# Python program explaining
# numpy.roots() function
# importing numpy as geek
import numpy as geek
p = [3.2, 2, 1]
gfg = geek.roots(p)
print (gfg)
输出 :
[-0.3125+0.46351241j -0.3125-0.46351241j]