title: Solve this equation with fixed point iteration
body: <p>How can I solve this equation </p>
  
  <blockquote>
    <p>x<sup>3</sup> + x - 1 = 0</p>
  </blockquote>
  
  <p>using fixed point iteration?</p>
  
  <p>Is there any <em>fixed-point iteration</em> code (especially in Python) I can find online?</p>