Python | Numpy np.polyroots() method
np.polyroots() method is used to compute the roots of a polynomial series.Return the roots of the polynomial.
Syntax :
np.polyroots(c)
Parameters:
c :[array_like] 1-D arrays of polynomial series coefficients.Return : [ndarray] Array of the roots of the series. If all the roots are real, then out is also real, otherwise it is complex.
Code #1 :
# Python program explaining # numpy.polyroots() method     # importing numpy as np  # and numpy.polynomial.polynomial module as geek import numpy as np import numpy.polynomial.polynomial as geek     # Input polynomial series coefficients   s = (2, 4, 8)      # using np.polyroots() method res = geek.polyroots(s)   # Resulting polynomial series coefficient print (res) |
Output:
[-0.25-0.4330127j -0.25+0.4330127j]
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Code #2 :
# Python program explaining # numpy.polyroot() method     # importing numpy as np  # and numpy.polynomial.polynomial module as geek import numpy as np import numpy.polynomial.polynomial as geek     # polynomial series coefficients s = (1, 2, 3, 4, 5)       # using np.polyroots() method res = geek.polyroots(s)   # Resulting polynomial series print (res) |
Output:
[-0.53783227-0.35828469j -0.53783227+0.35828469j 0.13783227-0.67815439j 0.13783227+0.67815439j]
