>>> A = mat('[1 3 5; 2 5 1; 2 3 8]')
>>> A
Matrix([[1, 3, 5],
       [2, 5, 1],
       [2, 3, 8]])
>>> A.I
Matrix([[-1.48,  0.36,  0.88],
       [ 0.56,  0.08, -0.36],
       [ 0.16, -0.12,  0.04]])
>>> linalg.inv(A)
array([[-1.48,  0.36,  0.88],
       [ 0.56,  0.08, -0.36],
       [ 0.16, -0.12,  0.04]])