numpy.roots() function - Python
Last Updated :
11 Jun, 2020
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numpy.roots()
function return the roots of a polynomial with coefficients given in p. The values in the rank-1 array p are coefficients of a polynomial. If the length of p is n+1 then the polynomial is described by: 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.Code #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)
[-1.+1.41421356j -1.-1.41421356j]Code #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)
[-0.3125+0.46351241j -0.3125-0.46351241j]