trong>&nbsp;
<div class="block"><i>this conversion method is temporary in version 3.1, as the <a href="../../../../../../../org/apache/commons/math3/analysis/DifferentiableMultivariateFunction.html" title="interface in org.apache.commons.math3.analysis"><code>DifferentiableMultivariateFunction</code></a> interface itself is deprecated</i></div>
</div>
</td>
</tr>
</tbody>
</table>
<table border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Metho