nds to compile and run the sample program.
        </li>
        <li>
          <a href = "pitcon66_prb7_output.txt">pitcon66_prb7_output.txt</a>,
          the output file.
        </li>
      </ul>
    </p>

    <p>
      <b>PITCON66_PRB8</b> sets up the Freudenstein Roth function, with N = 3,
      and investigates the use of the options for approximating the jacobian using
      finite differences.
      <ul>
        <li>
          <a href = "pitcon66_prb8.f">pitcon66_prb8.f</a>,
          a sample call