d><td align="right"><span style="font-style: italic;">f</span>(<span style="font-style: italic;">x</span>)</td><td>&nbsp;&nbsp;&nbsp;</td><td><span style="font-family: courier new,courier,monospace;">(f&nbsp;x)</span></td></tr>
<tr class="first"><td><span style="font-family: helvetica,arial,sans-serif; font-weight: bolder; font-size: small;">&nbsp;equations</span></td><td>&nbsp;&nbsp;&nbsp;</td><td>&nbsp;</td><td>&nbsp;&nbsp;&nbsp;</td><td>&nbsp;</td></tr>
<tr class="middle"><td align="right">&nbsp;</td><td