 symmetric about the
MLE, are returned (in <code>sym_CI</code>) and <code>prof_CI</code> in the returned
object will contain <code>NA</code>s.</p></dd>


<dt>...</dt>
<dd><p>Further arguments to be passed to <code><a href="https://rdrr.io/r/stats/optim.html" class="external-link">optim</a></code>.
These may include <code>gr</code>, <code>method</code>, <code>lower</code>, <code>upper</code>
or <code>control</code>.</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>An object of class "co