ption">Description</a>
        </h5>
<p>
          There are four <a href="http://en.wikipedia.org/wiki/Incomplete_beta_function" target="_top">incomplete
          beta functions</a> : two are normalised versions (also known as <span class="emphasis"><em>regularized</em></span>
          beta functions) that return values in the range [0, 1], and two are non-normalised
          and return values in the range [0, <a class="link" href="beta_function.html" title="Beta">beta</a>(a,
          b)]. Users intere