Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Strange results from Mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg75027] Re: Strange results from Mathematica
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sat, 14 Apr 2007 01:14:21 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <evn8cr$s7$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

Mathematica 5.2 does this correct.

Regards
   Jens

Jung-Tsung Shen wrote:
> Hi, I encountered a rather strange results from Mathematica today.
> 
> When evaluating the following integration
> 
> (1) Integrate[x (BesselJ[0, x])^2, {x,0, infinity}]
> 
> my Mathematica gave the answer 0. That's very weird, since if you plot
> out the function x (BesselJ[0, x])^2, apparently the integral should
> not be zero ...
> 
> Moreover, for the following integration
> 
> (2) Integrate[ (BesselJ[0, x])^2, {x,0, infinity}]
> 
> My Mathematica says it's some finite value. However, once you did
> this, and then did (1), and then came back to do (1), the answer
> became 0 ...
> 
> My Mathematica version is 5.0.1.0 on Mac Powerbook.
> 
> Thanks.
> 
> JT
> 


  • Prev by Date: Re: Strange results from Mathematica
  • Next by Date: Re: Fourier Transforms
  • Previous by thread: Re: Strange results from Mathematica
  • Next by thread: Re: Strange results from Mathematica