ass="co"># Random uniform variable</span></span>
<span class="r-in"><span class="va">z</span> <span class="op">&lt;-</span> <span class="fu"><a href="portal.html">closed_form</a></span><span class="op">(</span><span class="op">~</span><span class="fl">2</span> <span class="op">+</span> <span class="va">a</span><span class="op">)</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="va">z</span><span class="op">$</span><span class="fu">compute</span><span class="op">(</span><span class="op