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
- Re: Integrate Bug