Python | Numpy np.polyfromroots() method Last Updated : 31 Dec, 2019 Comments Improve Suggest changes Like Article Like Report np.polyfromroots() method is used to generate a polynomial series with given roots. Syntax : np.polyfromroots(roots) Parameters: roots :[array_like] Input sequence containing the roots. Return : [ndarray] 1-D array of coefficients of polynomial series. Code #1 : Python3 # Python program explaining # numpy.polyfromroots() method # importing numpy as np # and numpy.polynomial.polynomial module as geek import numpy as np import numpy.polynomial.polynomial as geek # Input roots roots = (2, 4, 8) # using np.polyfromroots() method res = geek.polyfromroots(roots) # Resulting polynomial series coefficient print (res) Output: [-64. 56. -14. 1.] Code #2 : Python3 # Python program explaining # numpy.polyfromroots() method # importing numpy as np # and numpy.polynomial.polynomial module as geek import numpy as np import numpy.polynomial.polynomial as geek # Input roots s = (1, 2, 3, 4, 5) # using np.polyfromroots() method res = geek.polyfromroots(s) # Resulting polynomial series coefficient print (res) Output: [-120. 274. -225. 85. -15. 1.] Comment More infoAdvertise with us Next Article Python | Numpy np.polyone() method J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-Mathematical Function Practice Tags : python Similar Reads 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 1 min read 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 1 min read Python | Numpy np.polyzero() method np.polyzero() method can be used instead of np.zeros for creating a array whose elements are 0. Syntax : np.polyzero() Return : Return array([0]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyzero() method # import numpy and polyzero import numpy as np from numpy.polynomial.polyno 1 min read Python | Numpy np.polyzero() method np.polyzero() method can be used instead of np.zeros for creating a array whose elements are 0. Syntax : np.polyzero() Return : Return array([0]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyzero() method # import numpy and polyzero import numpy as np from numpy.polynomial.polyno 1 min read Python | Numpy np.polyone() method np.polyone() method can be used instead of np.ones for creating a array whose elements are 1. Syntax : np.polyone() Return : Return array([1]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyone() method # import numpy and polyone import numpy as np from numpy.polynomial.polynomial 1 min read Python | Numpy np.polyone() method np.polyone() method can be used instead of np.ones for creating a array whose elements are 1. Syntax : np.polyone() Return : Return array([1]) Example #1 : Python3 1=1 # Python program explaining # numpy.polyone() method # import numpy and polyone import numpy as np from numpy.polynomial.polynomial 1 min read Like