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MathGroup Archive 2004

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Elliptic Integral problem with 5.0

  • To: mathgroup at
  • Subject: [mg46668] Elliptic Integral problem with 5.0
  • From: Andreas Stahel <sha at>
  • Date: Fri, 27 Feb 2004 19:31:58 -0500 (EST)
  • Sender: owner-wri-mathgroup at

Dear Mathematica users

we just upgraded from version 4.2 to 5.0 (5.0.1)
and it seems that an some integrals are not solvabla any more
Here the input on the system
"5.0 for Sun Solaris (UltraSPARC) (November 26, 2003)"

Integrate[Cos[phi]/(x^2 - 2*x*r*Cos[phi] + r^2 + z^2)^(3/2),{phi, 0, 2*Pi}]

and the kernel just happily uses up CPU cycles with no result. I have
not found any hint on similar problems on the wri site and google
did not turn up information either.

Would anybody have a hint on what is going on.

With best regards

Andreas Stahel       E-Mail: Andreas.Stahel at [ANTI-SPAM]
Mathematics, HTI     Phone: ++41 +32 32 16 258
Quellgasse 21        Fax:   ++41 +32 321 500
CH-2501 Biel         WWW:

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