 = a<sub>6</sub> - a<sub>7</sub></td>
     <td>y<sub>0</sub> = b<sub>6</sub> - b<sub>7</sub></td>
 </tr>
 </tbody>
 </table>

 <h3>How it works</h3>
 <ol>
 <li>Construct a matrix with <code>N</code> rows and <code>n + 1</code> columns,
 <code>hadm[n+1][N]</code>.<br/>
 <em>(If I use [x][y] it always means [row-offset][column-offset] of a
 Matrix with n rows and m columns. Its entries go from M[0][0]
 to M[n][N])</em></li>
 <li>Place the input vector <code>x[N]</code> in the first column of the
 matrix <code