From: Brian Candler <B.Candler@...>
Date: 2007-03-30T06:00:53+09:00
Subject: Re: Ruby math.pow equivalent

On Fri, Mar 30, 2007 at 05:43:38AM +0900, John Butler wrote:
> I am trying to calculate a monthly payment for a loan in Ruby.  Does
> anyone know what the equivalent for math.pow in Java is for Ruby?
> 
> @monthlypayment = @principal*@rate/(1-Math.pow(1/(1+@rate),@payments))
> 
> Ive searched everywhere and cant seem to find anything.

http://www.rubycentral.com/book/ref_c_float.html#Float.Arithmeticoperations

Look for 'exponentiation'