">=</span> <span class="fl">0.5</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">5</span><span class="op">)</span></span>
<span><span class="op">)</span></span>
<span><span class="co">#&gt; <span style="color: #BBBB00;">!</span> Warning: f(5) is 0.03125. If f is defined for x &gt;= 5, trying a upper limit might be better