pan class="inlinemediaobject"><img src="../../../images/accumulators/form_3.png"></span> (left tail) and <span class="inlinemediaobject"><img src="../../../images/accumulators/form_4.png"></span> (right tail), where</p>
<div class="equation">
<a name="id779998"></a><p class="title"><b>Equation&#160;1.&#160;</b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_5.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<p>