#範例2-8：三個矩陣相乘具有分配律
import numpy as np

A = np.array([
    [4, -1],
    [2, 3]
])
B = np.array([
    [5, 3],
    [0, 1]
])
C = np.array([
    [9, 8],
    [-6, 2]
])
print('(A(B+C)=\n', A @ (B+C))
print('AB+AC=\n', A @ B + A @ C)