A = size 3 by 3 Matrix of double:
[ 1 4 7 ]
[ 2 5 8 ]
[ 3 6 9 ]

x = size 3 Vector of double:
[ 7 8 9 ]

A*x = size 3 Vector of double:
[ 102 126 150 ]

x*A = size 3 Vector of double:
[ 50 122 194 ]

