Need help Math formulas for PHP

Can someone help me to convert these math formulas into php

 

PHP has a exponent function, called pow - used in the form of pow(x, y) - this results in the mathematical equivalent to x^y
Therefore, 0.4074% could be achieved by the following, resulting in $result1

$result1 = pow(1 + 0.05, 1/12);

Code (markup):

The second equation is just a longer version of the first; the pow(x, y) will still be used.

Post what you have so far, in terms of variable names etc, and I'll finish it..

 

More info can be found at http://php.about.com/od/phpfunctions/g/php_exponent.htm

 

Thank you guys, i was using pow() function but not correctly

 

Just make sure you deal with your result as the right type of variable and you should be fine