div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/analysis/DifferentiableUnivariateFunction.html#derivative()">derivative</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/analysis/DifferentiableUnivariateFunction.html" title="interface in org.apache.commons.math3.analysis">DifferentiableUnivariateFunction</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the derivative function</dd></dl>
<