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MathGroup Archive 2005

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Re: Log function

  • To: mathgroup at
  • Subject: [mg57324] Re: [mg57297] Log function
  • From: "Jaccard Florian" <Florian.Jaccard at>
  • Date: Wed, 25 May 2005 06:02:28 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Hello !

"a" is an exact number, I suppose?
So Log[a] is exact! If you want a machine-precision result, type : Log[N[a]]

Or, for example :  Log[3.0] instead of Log[3] !


-----Message d'origine-----
De : Bill Ginsberg [mailto:eqmc2 at] 
Envoyé : mardi, 24. mai 2005 11:13
À : mathgroup at
Objet : [mg57297] Log function

I have Mathematica 5.0.1.  When I attempt to get the Log of a number "a" 
by entering Log[a], it does not return the value but echoes back: 
Log[a].  How is this fixed?

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