Example

> A = rand(5,5)
 A =
   0.0882    0.00543      0.246      0.161      0.555
    0.908      0.222      0.782      0.975       0.29
    0.362       0.98      0.341     0.0106      0.205
    0.148       0.83      0.461      0.414      0.561
    0.879    0.00526       0.52      0.233      0.791
> X = rand(5,1)
 X =
    0.269
    0.334
    0.278
    0.789
    0.692
> B = A*X
 B =
    0.605
     1.51
     0.67
     1.16
     1.11
> //Now we should be able to use A and B to get X back
> soln = solve(A,B)
 soln =
    0.269
    0.334
    0.278
    0.789
    0.692
> // Check how close we are:
> soln - X
-2.22e-16
-1.67e-16
 8.88e-16
-4.44e-16
-2.22e-16