np.legroots()
方法用於計算Legendre係列的根。返回多項式的根。
用法:np.legroots(c)
參數:
c :[array_like] 1-D arrays of legendre series coefficients.
返回:[ndarray]係列根的數組。如果所有的根都是真實的,那麽輸出也是真實的,否則它是複雜的。
代碼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)
輸出:
[-0.60762522 0.27429189]
代碼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)
輸出:
[-0.86884116 -0.48972874 0.21530729 0.68611975]
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