title: Math.net numerics DenseMatrix backward compatibility
body: <p>Is DenseMatrix from version 3.2.3.2 not comatible with 2.6.x.x version ?</p>
  
  <p>Is there any substitute for creating DenseMatrix from two dimensional array ?</p>
  
  <pre><code>var xDense = new DenseMatrix(double[,] xData);
  </code></pre>