在 Python 中从一个拉盖尔级数减去另一个


若要在 Python Numpy 中从一个拉盖尔级数减去另一个,请使用 polynomial.laguerre.lagsub() 方法。该方法返回代表其差的拉盖尔级数系数数组。返回两个拉盖尔级数之差 c1 - c2。系数序列从最低阶项到最高阶项,即 [1,2,3] 表示级数 P_0 + 2*P_1 + 3*P_2。参数 c1 和 c2 是从低到高排列的拉盖尔级数系数的一维数组。

步骤

首先,导入所需的库 −

import numpy as np
from numpy.polynomial import laguerre as L

创建拉盖尔级数系数的一维数组 −

c1 = np.array([1,2,3])
c2 = np.array([3,2,1])

显示系数数组 −

print("Array1...\n",c1)
print("\nArray2...\n",c2)

显示数据类型 −

print("\nArray1 datatype...\n",c1.dtype)
print("\nArray2 datatype...\n",c2.dtype)

检查这两个数组的维度 −

print("\nDimensions of Array1...\n",c1.ndim)
print("\nDimensions of Array2...\n",c2.ndim)

检查这两个数组的形状 −

print("\nShape of Array1...\n",c1.shape)
print("\nShape of Array2...\n",c2.shape)

若要在 Python Numpy 中从一个拉盖尔级数减去另一个,请使用 polynomial.laguerre.lagsub() 方法。该方法返回代表其差的拉盖尔级数系数数组 −

print("\nResult (difference)....\n",L.lagsub(c1, c2))

示例

import numpy as np
from numpy.polynomial import laguerre as L

# Create 1-D arrays of Laguerre series coefficients
c1 = np.array([1,2,3])
c2 = np.array([3,2,1])

# Display the arrays of coefficients
print("Array1...\n",c1)
print("\nArray2...\n",c2)

# Display the datatype
print("\nArray1 datatype...\n",c1.dtype)
print("\nArray2 datatype...\n",c2.dtype)

# Check the Dimensions of both the arrays
print("\nDimensions of Array1...\n",c1.ndim)
print("\nDimensions of Array2...\n",c2.ndim)

# Check the Shape of both the arrays
print("\nShape of Array1...\n",c1.shape)
print("\nShape of Array2...\n",c2.shape)

# To subtract one Laguerre series from another, use the polynomial.laguerre.lagsub() method in Python Numpy
print("\nResult (difference)....\n",L.lagsub(c1, c2))

输出

Array1...
   [1 2 3]

Array2...
   [3 2 1]

Array1 datatype...
int64

Array2 datatype...
int64

Dimensions of Array1...
1

Dimensions of Array2...
1

Shape of Array1...
(3,)

Shape of Array2...
(3,)

Result (difference)....
   [-2. 0. 2.]

更新于: 03-Mar-2022

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