</span><span class="op">$</span><span class="va">hessian</span><span class="op">)</span></span>
<span><span class="co">#&gt;          [,1]</span></span>
<span><span class="co">#&gt; [1,] 568.4171</span></span>
<span></span>
<span><span class="co">## Standard errors</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/print.html" class="external-link">print</a></span><span class="op">(</span><span class="va">theta_2</span><span class="op">$</span><span class="va">fit</span><span class="op">$<