s for plotdf</a></li>
  </ul></li>
  <li><a name="TOC338" href="maxima_67.html#SEC356">67. romberg</a>
  <ul class="toc">
    <li><a name="TOC339" href="maxima_67.html#SEC357">67.1 Functions and Variables for romberg</a></li>
  </ul></li>
  <li><a name="TOC340" href="maxima_68.html#SEC358">68. simplex</a>
  <ul class="toc">
    <li><a name="TOC341" href="maxima_68.html#SEC359">68.1 Introduction to simplex</a></li>
    <li><a name="TOC342" href="maxima_68.html#SEC360">68.2 Functions and Variables for simplex