and N = 3 variables.  The solution curve has
      some severe bends.
      <ul>
        <li>
          <a href = "pitcon66_prb1.f">pitcon66_prb1.f</a>,
          a sample calling program.
        </li>
        <li>
          <a href = "pitcon66_prb1.sh">pitcon66_prb1.sh</a>,
          commands to compile and run the sample program.
        </li>
        <li>
          <a href = "pitcon66_prb1_output.txt">pitcon66_prb1_output.txt</a>,
          the output file.
        </li>
      </ul>
    </p>

    <p>
  