New Post: c# interactive

>#r "C:\work\csharp\mathnet-numerics\out\debug\Net40\MathNet.Numerics.dll"
  
> using MathNet.Numerics.LinearAlgebra.Generic;
> using MathNet.Numerics.LinearAlgebra.Double;
 
> var mat = DenseMatrix.Create(3, 3, (i, j) => 1.0*(i+j))
> var mm = mat * mat;
> Console.WriteLine(mm)
DenseMatrix 3x3-Double

       5            8           11
       8           14           20
      11           20           29