">((</span><span class="identifier">p</span> <span class="special">-</span> <span class="number">1</span><span class="special">)</span> <span class="special">*</span> <span class="identifier">x</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">exp</span><span class="special">(-</span><span class="identifier">x</span><span class="special">)</span> <span class="special">*</span> <span class="identifier">pow</span><span class="special">(</span><span class="identifier"