-parametric
Weibull distributions. The Weibull distributions are parameterized with scale
\(\eta\) and shape \(\beta\). In M-step these parameters are estimated using
Newton-Raphson. This function is implemented in c++ and is called in function
<code><a href="mixmod_em.html">mixmod_em</a></code>.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="fu">mixture_em_cpp</span><span class="op">(</span>
  <span class="va">x</span>,
  <span cl