How do I force Log[Exp[x]]=x
- To: mathgroup at smc.vnet.net
- Subject: [mg21988] How do I force Log[Exp[x]]=x
- From: sasrbk at unx.sas.com (Bart Killam)
- Date: Thu, 10 Feb 2000 02:25:32 -0500 (EST)
- Organization: SAS Institute
- Sender: owner-wri-mathgroup at wolfram.com
For real x, Log[Exp[x]]=x. For general complex x Mathematical leaves this expression unevaluated. I have tried Log[Exp[x/;Im[x]=0]], but this give a result of 0. How do I tell Mathematica that I want the expression simplied for real x ? Thanks for any help. -- Bart Killam Work: 919-677-8000 x7538 SAS Institute Inc. Fax: 919-677-8123 SAS Campus Dr., R5115 Email: sasrbk at unx.sas.com Cary NC 27513-8000