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MathGroup Archive 1997

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Re: Incorrect result for improper integral with MMA?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8824] Re: Incorrect result for improper integral with MMA?
  • From: Paul Abbott <paul at physics.uwa.edu.au>
  • Date: Mon, 29 Sep 1997 02:39:49 -0400
  • Organization: University of Western Australia
  • Sender: owner-wri-mathgroup at wolfram.com

Chris Barker wrote:

> The command:
> 
> Integrate[1/(x*Log[x]^2),{x,3,Infinity}]
> 
> yields the result:
>...

Paul Abbott wrote: 

>Mathematica easily computes the indefinite integral -- from this you
>will see why the integral does not converge on [3,Infinity).

Actually, I was wrong -- another look at the indefinite integral shows
that the integral _does_ converge on [3,Infinity) to 1/Log[3].

Cheers,
	Paul  
____________________________________________________________________ 
Paul Abbott                                   Phone: +61-8-9380-2734
Department of Physics                           Fax: +61-8-9380-1014
The University of Western Australia           
Nedlands WA  6907                     mailto:paul at physics.uwa.edu.au 
AUSTRALIA                             http://www.pd.uwa.edu.au/~paul

            God IS a weakly left-handed dice player
____________________________________________________________________


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