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Legal Studies用 Python 计算具有给定复数根的勒让德级数根
为计算勒让德级数的根，可在 Python 中使用 polynomial.legendre.lagroots() 方法。此方法返回一个级数根数组。如果所有根都是实数，则 out 也是实数，否则就是复数。参数 c 是一个一维系数数组。
步骤
首先，导入所需的库 −
from numpy.polynomial import legendre as L
计算勒让德级数的根 −
j = complex(0,1)
print("Result...\n",L.legroots((-j, j)))获取数据类型 −
print("\nType...\n",L.legroots((-j, j)).dtype)获取形状 −
print("\nShape...\n",L.legroots((-j, j)).shape)举例
from numpy.polynomial import legendre as L
# To compute the roots of a Legendre series, use the polynomial.legendre.lagroots() method in Python
# The method returns an array of the roots of the series. If all the roots are real, then out is also real, otherwise it is complex.
# The parameter c is a 1-D array of coefficients.
j = complex(0,1)
print("Result...\n",L.legroots((-j, j)))
# Get the datatype
print("\nType...\n",L.legroots((-j, j)).dtype)
# Get the shape
print("\nShape...\n",L.legroots((-j, j)).shape)输出
Result... [1.+0.j] Type... complex128 Shape... (1,)
更新于： 09-Mar-2022
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