code>UnivariateDifferentiableFunction</code></a> classes compute both the
 value and the first derivative of the function.</p></div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/analysis/differentiation/UnivariateDifferentiableFunction.html#value(org.apache.commons.math3.analysis.differentiation.DerivativeStructure)">value</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/analysis/differentiation/Univaria