public void Invesation()
 {
     double[,] a =
     {
         { 2, 3 },
         { 4, 2 }
     };
     double[,] pom =
     {
         { -0.25, 0.375 },
         {   0.5, -0.25 }
     };
     double[,] ia = mo.MatrixInversation(a);
     for (int i = 0; i < 2; i++)
     {
         for (int j = 0; j < 2; j++)
         {
             Assert.AreEqual(pom[i, j], ia[i, j], 0.00001);
         }
     }
 }