Python Numpy np.legroots()方法
np.legroots()方法用于计算**传奇系列的根。返回多项式的根。
语法: np.legroots(c)
参数:
c : [array_like] legendre系列系数的一维数组。
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.legroots() method
# importing numpy as np
# and numpy.polynomial.legendre module as geek
import numpy as np
import numpy.polynomial.legendre as geek
# Input legendre series coefficients
s = (2, 4, 8)
# using np.legroots() method
res = geek.legroots(s)
# Resulting legendre series coefficient
print (res)
输出:
[-0.60762522 0.27429189]
代码#2:
# Python program explaining
# numpy.legroot() 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
s = (1, 2, 3, 4, 5)
# using np.legroots() method
res = geek.legroots(s)
# Resulting legendre series
print (res)
输出:
[-0.86884116 -0.48972874 0.21530729 0.68611975]