Elliptic Integral problem with 5.0

*To*: mathgroup at smc.vnet.net*Subject*: [mg46668] Elliptic Integral problem with 5.0*From*: Andreas Stahel <sha at hta-bi.bfh.ch>*Date*: Fri, 27 Feb 2004 19:31:58 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

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 $Version "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 =========================================================================== Andreas Stahel E-Mail: Andreas.Stahel at [ANTI-SPAM]hti.bfh.ch Mathematics, HTI Phone: ++41 +32 32 16 258 Quellgasse 21 Fax: ++41 +32 321 500 CH-2501 Biel WWW: www.hta-bi.bfh.ch/~sha Switzerland