open MathNet.Numerics.LinearAlgebra

​

let matrix1 =   matrix [[1.0; 2.0]; [1.0; 3.0]]

let matrix2 =  matrix [[1.0; -2.0]; [0.5; 3.0]]

let matrix12 = matrix1 * matrix2

​

​

matrix12 |> printfn "%A"