Python | Numpy np.legadd() method

Python | Numpy np.legsub() method

Last Updated : 31 Dec, 2019

np.legub() method is used to subtract one Legendre series to another.It returns the difference of two Legendre series c1 - c2.

Syntax : np.legub(c1, c2)
Parameters:
c1, c2 :[ array_like ] 1-D arrays of Legendre series coefficients ordered from low to high.

Return : [ndarray] Legendre series coefficients representing their difference.

Code #1 :

# Python program explaining 
# numpy.legsub() method  
    
# importing numpy as np   
# and numpy.polynomial.legendre module as geek  
import numpy as np  
import numpy.polynomial.legendre as geek 
    
# Legendre series coefficients 
  
s1 = (2, 4, 8)  
s2 = (1, 3, 5)    
    
# using np.legsub() method  
res = geek.legsub(s1, s2)  
  
# Resulting Legendre series 
print (res)  

Output:

[ 1.  1.  3.]

Code #2 :

# Python program explaining 
# numpy.legub() method  
    
# importing numpy as np   
# and numpy.polynomial.legendre module as geek  
import numpy as np  
import numpy.polynomial.legendre as geek 
    
# Legendre series coefficients 
s1 = (10, 20, 30, 40, 50)  
s2 = (2, 4, 6, 8, 10)     
    
# using np.legsub() method  
res = geek.legsub(s1, s2)  
  
# Resulting Legendre series 
print (res)  

Output:

[  8.  16.  24.  32.  40.]

Python | Numpy np.legadd() method

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