import numpy as np
a = np.array([[2, 4], [0, 4], [7, 9], [3, 7]])
b = np.array([[9, 2], [4, 1], [1, 7], [0, 2]])
a + b
c = np.array([[1, 3, 7], [2, 9, 0]])
c + b
6 * c
d = np.array([[6, 3], [0, 1]])
d / 3
e = np.array([[2], [1], [0], [3]])
f = np.array([[4], [2], [3], [1]])
g = np.array([[6], [0], [3], [12]])
(5 * e) - f + (g / 6)