A=matrix([[1,0],[2,1]])
B=matrix([[1,2],[0,1]])
AB=A*B
BA=B*A
Ain=A.inverse()
Bin=B.inverse()
ABin=AB.inverse()
print "\n\n A matrix:\n  ",A
print "\n\n B matrix: \n ",B
print "\n\n A inverse  matrix:\n",Ain
print "\n\n B inverse matrix:\n",Bin
print "\n\n AB inverse matrix:\n",ABin