title: How can I use assumptions with FindRoot[] in Mathematica?
body: <p>In Mathematica I have something like</p>
  
  <pre><code>FindRoot[f[x], {x, a}]
  </code></pre>
  
  <p>Now I want FindRoot to constrain the solutions to 0 &lt; x &lt; 1. </p>
  
  <p>How can I obtain this?</p>
  
  <p>Thanks</p>