nctions</h3>
<a id="index-entry-93d2282b7bada6cf97c5977413fb03d509c396ea" class="index-entry"></a> <!-- real; beta_lpdf; (reals theta | reals alpha, reals beta); -->
<p></p>
<p><code>real</code> <strong><code>beta_lpdf</code></strong><code>(reals theta | reals alpha, reals beta)</code><br> The log of the beta density of <code>theta</code> in <span class="math inline">\([0,1]\)</span> given positive prior successes (plus one) alpha and prior failures (plus one) beta</p>
<small><i>Available since 2.12</i></sm