07mul_vec&mat.py

from matrix import Matrix, Vector

u = Matrix([[1., 0.],[0., 1.]]);
v = Vector([[4., 2.]]);
print(u.mul_vec(v)); # [4.][2.]

u = Matrix([[2., 0.],[0., 2.]]);
v = Vector([[4., 2.]]);
print(u.mul_vec(v)); # [8.][-4]

u = Matrix([[2., -2.],[-2., 2.]]);
v = Vector([[4., 2.]]);
print(u.mul_vec(v)); # [4][-4]

u = Matrix([[1., 0.],[0., 1.]]);
v = Matrix([[1., 0.],[0., 1.]]);
print(u.mul_mat(v)); # [[1., 0.][0., 1.]]

u = Matrix([[1., 0.],[0., 1.]]);
v = Matrix([[2., 1.],[4., 2.]]);
print(u.mul_mat(v)); # [[2., 1.][4., 2.]]

u = Matrix([[3., -5.],[6., 8.]]);
v = Matrix([[2., 1.],[4., 2.]]);
print(u.mul_mat(v)); # [[-14., -7.][44., 22.]]