Python | Numpy np.legfromroots() method
Last Updated :
31 Dec, 2019
np.legfromroots()
method is used to generate a legendre series with given roots.
Syntax : np.legfromroots(roots)
Parameters:
roots :[array_like] Input sequence containing the roots.
Return : [ndarray] 1-D array of coefficients of legendre series.
Code #1 :
import numpy as np
import numpy.polynomial.legendre as geek
roots = ( 2 , 4 , 8 )
res = geek.legfromroots(roots)
print (res)
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Output:
[-68.66666667 56.6 -9.33333333 0.4 ]
Code #2 :
import numpy as np
import numpy.polynomial.legendre as geek
s = ( 1 , 2 , 3 , 4 , 5 )
res = geek.legfromroots(s)
print (res)
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Output:
[ -1.98000000e+02 3.25428571e+02 -1.58571429e+02 3.44444444e+01
-3.42857143e+00 1.26984127e-01]
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