np.lagroots()
方法用於計算Laguerre序列的根。返回多項式的根。
用法:np.lagroots(c)
參數:
c :[array_like] 1-D arrays of Laguerre series coefficients ordered from low to high.
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.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)
輸出:
[ 0.8416876 4.1583124]
代碼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)
輸出:
[ 0.50680523 2.37919156 5.5446037 10.76939951]
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