np.lagcompanion()
方法用于返回Laguerre级数的伴随矩阵。
用法:np.lagcompanion(c)
参数:
c :[array_like] 1-D arrays of Laguerre series coefficients ordered from low to high.
返回:[ndarray]尺寸(度,度)的同伴矩阵。
代码1:
# Python program explaining
# numpy.lagcompanion() 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.lagcompanion() method
res = geek.lagcompanion(s)
# Resulting Companion matrix
print (res)
输出:
[[ 1. -0.5] [-1. 4. ]]
代码2:
# Python program explaining
# numpy.lagcompanion() 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.lagcompanion() method
res = geek.lagcompanion(s)
# Resulting Companion matrix
print (res)
输出:
[[ 1. -1. 0. 0.8] [ -1. 3. -2. 1.6] [ 0. -2. 5. -0.6] [ 0. 0. -3. 10.2]]
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