在 Python 中将一个拉盖尔级数乘以另一个拉盖尔级数
要将一个拉盖尔级数乘以另一个拉盖尔级数,请使用 Python Numpy 中的 polynomial.laguerre.lagmul() 方法。返回两个拉盖尔级数 c1 * c2 的乘积。系数顺序从最低次项到最高次项,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)
检查两个数组的维数 −
print("\nDimensions of Array1...\n",c1.ndim) print("\nDimensions of Array2...\n",c2.ndim)
检查两个数组的形状 −
print("\nShape of Array1...\n",c1.shape) print("\nShape of Array2...\n",c2.shape)
要将一个拉盖尔级数乘以另一个拉盖尔级数,请使用 Python Numpy 中的 polynomial.laguerre.lagmul() 方法 −
print("\nResult (multiply)....\n",L.lagmul(c1, c2))
实例
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 multiply one Laguerre series to another, use the polynomial.laguerre.lagmul() method in Python Numpy print("\nResult (multiply)....\n",L.lagmul(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 (multiply).... [ 10. 4. 16. -12. 18.]
广告