在 Python 中從另一個 Hermite 級數中減去一個 Hermite 級數


若要從另一個 Hermite 級數中減去一個 Hermite 級數,請在 Python Numpy 中使用 polynomials.hermite.hermsub() 方法。該方法返回表示它們的差的 Hermite 級數的陣列。返回兩個 Hermite 級數 c1 - c2 的差。係數序列從低階項到高階項,即 [1,2,3] 表示級數 P_0 + 2*P_1 + 3*P_2。引數 c1 和 c2 是從低到高排列的 Hermite 級數係數的 1 維陣列。

步驟

首先,匯入所需的庫 −

import numpy as np
from numpy.polynomial import hermite as H

建立 Hermite 級數係數的 1 維陣列 −

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

顯示係數陣列 −

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

顯示資料型別 −

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

檢查兩個陣列的維度 −

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

檢查兩個陣列的形狀 −

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

若要從另一個 Hermite 級數中減去一個 Hermite 級數,請在 Python Numpy 中使用 polynomial.hermite.hermsub() 方法 −

print("\nResult (difference)....\n",H.hermsub(c1, c2))

示例

import numpy as np
from numpy.polynomial import hermite as H

# Create 1-D arrays of Hermite 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 Hermite series to another, use the polynomial.hermite.hermsub() method in Python Numpy
# The method returns an array representing the Hermite series of their difference.
print("\nResult (difference)....\n",H.hermsub(c1, c2))

輸出

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.]

更新於:2022-03-01

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