Python

halaman 107

import numpy as np

A = np.matrix([[3, 0, -5], [-1, -3, 4]])
B = np.matrix([[-5, 5, 2], [1, -2, 0]])

A + B

## matrix([[-2,  5, -3],
##         [ 0, -5,  4]])

A = np.matrix([[3, 0, -5], [-1, -3, 4]])

-3 * A

## matrix([[ -9,   0,  15],
##         [  3,   9, -12]])

A = np.matrix([[1, -2,3], [-3, 2, -1]])
B = np.matrix([[0, 2], [1, 1], [2, 0]])

A * B

## matrix([[ 4,  0],
##         [ 0, -4]])

np.transpose(A)

## matrix([[ 1, -3],
##         [-2,  2],
##         [ 3, -1]])

np.transpose(B)

## matrix([[0, 1, 2],
##         [2, 1, 0]])