eq.html" class="external-link">seq</a></span><span class="op">(</span><span class="fl">1</span>, <span class="fl">10</span> <span class="op">*</span> <span class="va">pi</span>, length.out <span class="op">=</span> <span class="fl">400</span><span class="op">)</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span>    <span class="fu"><a href="https://dplyr.tidyverse.org/reference/mutate.html" class="external-link">mutate</a></span><span class="op">(</span>x <sp