在 Python 中将一个切比雪夫级数乘以另一个
若要将一个切比雪夫级数乘以另一个,请在 Python 中使用 polynomial.chebyshev.chebmul() 方法。该方法返回表示其乘积的切比雪夫级数系数数组。返回两个切比雪夫级数 c1 * c2 的乘积。参数是系数序列,从最低阶“项”到最高阶,例如,[1,2,3] 表示级数 T_0 + 2*T_1 + 3*T_2。参数 c1 和 c2 是从小到高排列的切比雪夫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 chebyshev as C
创建切比雪夫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)
检查两个数组的维度 −
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)
若要将一个切比雪夫级数乘以另一个,请在 Python Numpy 中使用 polynomial.chebyshev.chebmul() 方法 −
print("\nResult (multiplication)....\n",C.chebmul(c1,c2))
示例
import numpy as np from numpy.polynomial import chebyshev as C # Create 1-D arrays of Chebyshev 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 Chebyshev series to another, use the polynomial.chebyshev.chebmul() method in Python Numpy print("\nResult (multiplication)....\n",C.chebmul(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 (multiplication).... [ 6.5 12. 12. 4. 1.5]
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