n class="special">}</span> <span class="comment">// nth_2deriv Halley</span>
</pre>
<p>
        While this function uses only slightly fewer iterations (typically around
        3) to find the root, compared to the original derivative-free method, we've
        moved from 8-10 elliptic integral calls to 6.
      </p>
<p>
        Full code of this example is at <a href="../../../../example/root_elliptic_finding.cpp" target="_top">root_elliptic_finding.cpp</a>.
      </p>
</div>
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