5_title.m</a>, 
          returns a title for problem 5.
        </li>
        <li>
          <a href = "p06_ab.m">p06_ab.m</a>, 
          returns bounds for problem 6.
        </li>
        <li>
          <a href = "p06_f.m">p06_f.m</a>, 
          returns the objective function value for problem 6.
        </li>
        <li>
          <a href = "p06_m.m">p06_m.m</a>, 
          returns the spatial dimension for problem 6.
        </li>
        <li>
          <a href = "p06_sol.m">p06_sol.m</a>, 
        