span class="va">theta</span><span class="op">)</span> <span class="fu">partial_power_func</span><span class="op">(</span><span class="va">theta</span><span class="op">)</span> <span class="op">-</span> <span class="va">target_power</span>, <span class="va">interval</span><span class="op">)</span><span class="op">$</span><span class="va">root</span></span></code></pre></div>
<pre><code><span><span class="co">## [1] 1.248515</span></span></code></pre>
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