constant for the beta distribution, and is defined for
<span class="math inline">\(\alpha &gt; 0\)</span> and <span class="math inline">\(\beta &gt; 0\)</span>. <span class="math display">\[ \text{lbeta}(\alpha,\beta) = \log
\Gamma(a) + \log \Gamma(b) - \log \Gamma(a+b) \]</span> See section
<a href="beta-appendix.html#beta-appendix">appendix</a> for definition of <span class="math inline">\(\text{B}(\alpha, \beta)\)</span>.</p>
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<p><code>R</code> <strong><code>tgamma</code