Linear Algebra, Mathematics, Science, Computational Thinking.
D array([[100], [ 85], [287]]) Matrix multiplication is not commutative A = np.array([[2, 3], [6, 5]]) A B = np.array([[5, 3], [2, 2]]) B AB AB = np.dot(A, B) AB array([[16, 12], [40, 28]]) is different from BA BA = np.dot(B, A) BA array([[28, 30], [16, 16]]) However vector multiplication is