logical processes using {flexFitR}. Constraints can help
ensure that parameter estimates remain within realistic or biologically
meaningful ranges, improving both the interpretability and reliability
of model outcomes.</p>
<div class="section level2">
<h2 id="introduction-to-modeling-with-constraints">Introduction to Modeling with Constraints<a class="anchor" aria-label="anchor" href="#introduction-to-modeling-with-constraints"></a>
</h2>
<p>In many biological models, certain relationships between parameter