Mathematica 9 is now available
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

a old post again

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72715] a old post again
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Tue, 16 Jan 2007 03:15:37 -0500 (EST)

See again my post here

http://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/b3548554d0d2089f/28be613fe6e90f20?lnk=gst&q=&rnum=1&hl=en#28be613fe6e90f20

I wonder why Mathematica 5.2 fails to evaluate symbolically the
following integral

Integrate[(Log[a*x]/Sqrt[1 + x^2])*BesselJ[0, x], {x, 0, Infinity}]
BesselI[0, 1/2]*BesselK[0, 1/2]*Log[a]

%/.a->0
0

NIntegrate[(Log[x]/Sqrt[1 + x^2])*BesselJ[0, x], {x, 0, Infinity},
Method -> Oscillatory]
-0.9979393746360525

whereas

Mathematica 4.0 succeds?

Regards
Dimitris


  • Prev by Date: Re: An Introduction to Programming with Mathematica, Third Edition
  • Next by Date: Re: Derivative recurrence further
  • Previous by thread: Re: Difficulties with Complex-Modulus Series
  • Next by thread: Re: a old post again