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MathGroup Archive 2003

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

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39280] Re: Log[Exp[r]] <> r?
  • From: Bas Zoetekouw <bas at o2w.nl>
  • Date: Sun, 9 Feb 2003 04:50:21 -0500 (EST)
  • References: <b22jou$6bh$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Jonathan Greenberg wrote in comp.soft-sys.math.mathematica:
>  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!

Try Simplify[Log[Exp[r]], {r>0}]

-- 
Kind regards,
  Bas Zoetekouw               ``Si l'on sait exactement ce que l'on va
                                faire, a quoi bon le faire?''
  bas at o2w.nl                                           Pablo Picasso


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