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

X = size 3 by 2 Matrix of double:
[ 10 13 ]
[ 11 14 ]
[ 12 15 ]

B = A*X = size 3 by 2 Matrix of double:
[ 162 204 ]
[ 180 228 ]
[ 162 207 ]

A\B = size 3 by 2 Matrix of double:
[ 10 13 ]
[ 11 14 ]
[ 12 15 ]

frobenius(A\B-X) = 2.7231e-14

