Python Numpy np.lagroots()方法
np.lagroots()方法用于计算**拉格尔数列的根。返回多项式的根。
语法: np.lagroots(c)
参数:
c : [array_like] 拉盖尔数列系数的一维数组,从低到高排序。
返回: [ndarray] 数列的根的数组。如果所有的根都是实数,那么输出也是实数,否则就是复数。
代码#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)
输出:
[ 0.8416876 4.1583124]
代码#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)
输出:
[ 0.50680523 2.37919156 5.5446037 10.76939951]