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Re: Log[Exp[r]] <> r?

• To: mathgroup at smc.vnet.net
• Subject: [mg39296] Re: Log[Exp[r]] <> r?
• From: nilton.volpato at ig.com.br (Nilton Volpato)
• Date: Mon, 10 Feb 2003 01:07:19 -0500 (EST)
• References: <b22jou$6bh$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Jonathan Greenberg <greenberg at ucdavis.edu> wrote in message news:<b22jou$6bh$1 at smc.vnet.net>...
> Hi there, why is it when I enter Log[Exp[r]] (or use Simplify or
> FullSimplify) I don't get r?  If I do Log[Exp[2]] I get 2!
> 
> --j

Simplify[ Log[Exp[r]], Element[r,Reals] ], does it!

-- Nilton