Re: Re: Integrate Bug

*To*: mathgroup at smc.vnet.net*Subject*: [mg100124] Re: [mg100097] Re: Integrate Bug*From*: R Martinez <rm.tech at mac.com>*Date*: Mon, 25 May 2009 06:18:44 -0400 (EDT)*References*: <gv2jh5$97b$1@smc.vnet.net> <200905231033.GAA21687@smc.vnet.net>

Hello, I also get 0 as the output with Mathematica 7.0.1 on a MacBook Pro running MacOSX 10.5.7. Raul Martinez On May 23, 2009, at 3:33 AM, lehin.p at gmail.com wrote: > On 21 May, 07:58, Ney Lemke <ney.nle... at gmail.com> wrote: >> I am trying to calculate this integral that should be positive.But >> the >> answer is 0. >> >> In: Integrate[(1)/(z^2 + b^2 + a^2 - 2 z b Sin[\[Theta]] - >> 2 a b Cos[\[Theta]])^(1/2), {\[Theta], 0, 2 \[Pi]}, >> Assumptions -> {a > 0, b > 0, z > 0}] >> >> Out:0 >> >> Anybody have notice a situation like that? >> >> My platform is MacOSX 10.4 and Mathematica 7. >> >> Best wishes, > > Hello, > > I confirm this bug on Windows XP SP3 with Mathematica 7.0.1. And I can > add that in version 5.2 this bug is absent (Mathematica 5.2 returns > unevaluated input). >

**References**:**Re: Integrate Bug***From:*lehin.p@gmail.com