title: How to implement GROWTH function in JavaScript
body: <p>I am trying to implement Microsoft Excel's <a href="http://office.microsoft.com/en-us/excel-help/growth-function-HA102753003.aspx?CTT=5&amp;origin=HA102752955">GROWTH</a> function in JavaScript. This function calculates predicted exponential growth by using existing data. What makes it tricky is that it must work with multiple sets of <code>known_x's</code> values. I could not find any reference equation. Any suggestions?</p>
  
  <p>Thanks in advance for your help.</p>