Python| Numpy np.lagmul() 方法

np.lagmul()方法用于将一个拉盖尔级数乘以另一个。它返回两个拉盖尔级数c1 * c2.

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

Return : [ndarray] Laguerre series coefficients representing their product.

代码#1：

# Python program explaining
# numpy.lagmul() 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
  
s1 = (2, 4, 8) 
s2 = (1, 3, 5)   
    
# using np.lagmul() method 
res = geek.lagmul(s1, s2) 
  
# Resulting laguerre series
print (res) 

输出：

[  54.  -86.  266. -348.  240.]

代码#2：

# Python program explaining
# numpy.lagmul() 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
s1 = (10, 20, 30, 40, 50) 
s2 = (2, 4, 6, 8, 10)    
    
# using np.lagmul() method 
res = geek.lagmul(s1, s2) 
  
# Resulting laguerre series
print (res) 

输出：

[   1100.   -1600.   10400.  -36000.   90600. -152400.  169400. -112000.
   35000.]