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URL: http://reusablecode.blogspot.com/2008/10/roots.html
This function allows you to calculate the root of a number beyond just square root.
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<?php /* Copyright (c) 2008, reusablecode.blogspot.com; some rights reserved. This work is licensed under the Creative Commons Attribution License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. */ // Calculate root to a given depth (square root, cubic root, etc.) // x is what you want the root of // y is the depth you want to go (2 = square, 3 = cubic, etc.) function root($x, $y) { } ?>
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