From: Amalrik Maia <amalrik.maia@...>
Date: 2013-03-28T12:51:59+09:00
Subject: Re: undefined local variable or method 'math'

just do:
1.9.3p362 :007 > Math.sqrt(9)
 => 3.0 
1.9.3p362 :008 > 

Em 28/03/2013, ās 00:35, Don Pick <lists@ruby-forum.com> escreveu:

> I am learning Ruby.
> In irb I type:
> math.sqrt(9)
> undefined local variable or method 'math' for main:Object
> 
> How do I troubleshoot this?
> 
> -- 
> Posted via http://www.ruby-forum.com/.
>