  </li>
        <li>
          <a href = "p06_f.m">p06_f.m</a>,
          evaluates the function for problem p06.
        </li>
        <li>
          <a href = "p06_q.m">p06_q.m</a>,
          returns the integral for problem p06.
        </li>
        <li>
          <a href = "p06_title.m">p06_title.m</a>,
          returns the title of problem p06.
        </li>
        <li>
          <a href = "r8_error.m">r8_error.m</a>,
          evaluates the error function of an R8 argument.
        </li>
        <l