#範例2-13：矩陣相乘的轉置具有分配律：(A*B).T = B.T * A.T
#注意AB次序：(A*B).T = B.T * A.T
#錯誤寫法：(A*B).T = A.T * B.T
import numpy as np
A = np.array([
    [1, 2],
    [3, 4],
    [5, 6]
])
B = np.array([
    [1, 0, 2],
    [4, 5, 6]
])
print('(A*B).T =\n', (A @ B).T)
print('(A*B).T =\n', (B.T) @ (A.T))