">=</span> <span class="fl">2</span><span class="op">)</span>,</span>
<span>  xlim <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">0</span>, <span class="fl">1</span><span class="op">)</span></span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Gráficos</span></span>
<span><span class="va">a</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr