rs if no equations have been defined.</li>
<li>NL_INVALID_INPUT_ERROR: Occurs if <code>x</code> is not appropriately sized for the problem as defined in <code>fcn</code>.</li>
<li>NL_OUT_OF_MEMORY_ERROR: Occurs if there is insufficient memory available.</li>
<li>NL_CONVERGENCE_ERROR: Occurs if the algorithm cannot converge within the allowed number of iterations.</li>
</ul>
</td></tr>
  </table>
  </dd>
</dl>
<dl class="section user"><dt>Example</dt><dd>The following example illustrates how to find the mini