Python | Numpy np.lagpow() method

Python | Numpy np.lagroots() method

Last Updated : 29 Dec, 2019

np.lagroots() method is used to compute the roots of a Laguerre series.Return the roots of the polynomial.

Syntax : np.lagroots(c)
Parameters:
c :[array_like] 1-D arrays of Laguerre series coefficients ordered from low to high.

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.lagroots() method  
    
# importing numpy as np   
# and numpy.polynomial.laguerre module as geek  
import numpy as np  
import numpy.polynomial.laguerre as geek 
    
# Input laguerre series coefficients 
  
s = (2, 4, 8)  
     
# using np.lagroots() method  
res = geek.lagroots(s)  
  
# Resulting laguerre series coefficient 
print (res)  

Output:

[ 0.8416876  4.1583124]

Code #2 :

# Python program explaining 
# numpy.lagroot() method  
    
# importing numpy as np   
# and numpy.polynomial.laguerre module as geek  
import numpy as np  
import numpy.polynomial.laguerre as geek 
    
# Laguerre series coefficients 
s = (1, 2, 3, 4, 5)  
  
    
# using np.lagroots() method  
res = geek.lagroots(s)  
  
# Resulting laguerre series 
print (res)  

Output:

[  0.50680523   2.37919156   5.5446037   10.76939951]

Python | Numpy np.lagpow() method

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