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Python Numpy np.legfromroots()用法及代碼示例


np.legfromroots()方法用於生成具有給定根的Legendre係列。

用法: np.legfromroots(roots)
參數:
roots :[array_like] Input sequence containing the roots.

返回:[ndarray]勒讓德級數係數的一維數組。


代碼1:

# Python program explaining 
# numpy.legfromroots() method  
    
# importing numpy as np   
# and numpy.polynomial.legendre module as geek  
import numpy as np  
import numpy.polynomial.legendre as geek 
    
# Input roots 
  
roots = (2, 4, 8)  
     
# using np.legfromroots() method  
res = geek.legfromroots(roots)  
  
# Resulting legendre series coefficient 
print (res) 
輸出:
[-68.66666667  56.6         -9.33333333   0.4       ]

代碼2:

# Python program explaining 
# numpy.legfromroots() method  
    
# importing numpy as np   
# and numpy.polynomial.legendre module as geek  
import numpy as np  
import numpy.polynomial.legendre as geek 
    
# Input roots 
s = (1, 2, 3, 4, 5)  
  
    
# using np.legfromroots() method  
res = geek.legfromroots(s)  
  
# Resulting legendre series coefficient 
print (res) 
輸出:
[ -1.98000000e+02   3.25428571e+02  -1.58571429e+02   3.44444444e+01
  -3.42857143e+00   1.26984127e-01]



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注:本文由純淨天空篩選整理自jana_sayantan大神的英文原創作品 Python | Numpy np.legfromroots() method。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。