size 3 by 3 matrix of double: 
[ 0.380002 0.10957 -0.585236 ]
[ 0.0108368 -0.243142 0.252524 ]
[ 0.182981 -0.484536 -0.319746 ]

size 3 by 3 matrix of double: 
[ 3.41954 5.44463 -1.95887 ]
[ 0.848852 -0.246375 -1.74825 ]
[ 0.670571 3.48915 -1.59923 ]

size 3 by 3 matrix of double: 
[ 1 0 0 ]
[ 0 1 0 ]
[ 0 0 1 ]

