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Posted By

Scooter on 10/04/08


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math


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wizard04


Nth Root

Published in: PHP 

URL: http://reusablecode.blogspot.com/2008/10/roots.html

This function allows you to calculate the root of a number beyond just square root.

Plain TextExpand 
  1. <?php
  2.     /*
  3.     Copyright (c) 2008, reusablecode.blogspot.com; some rights reserved.
  4.     
  5.     This work is licensed under the Creative Commons Attribution License. To view
  6.     a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or
  7.     send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
  8.     94305, USA.
  9.     */
  10.  
  11.     // Calculate root to a given depth (square root, cubic root, etc.)
  12.     // x is what you want the root of
  13.     // y is the depth you want to go (2 = square, 3 = cubic, etc.)
  14.     function root($x, $y)
  15.     {
  16.         return $x ^ (1 / $y);
  17.     }
  18. ?>

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