integration bug
- To: mathgroup at smc.vnet.net
- Subject: [mg63941] integration bug
- From: cgordon at cfcp.uchicago.edu
- Date: Tue, 24 Jan 2006 01:30:26 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi
I am using Mathematica 5.2 on windows xp.
When I try
(1/(2 * pi * (-1)^(1/2)))*
Integrate[
w/((w^2 - 2)*(w - z))*(-1)^(1/2)*w /. w -> Exp[(-1)^(1/
2)*theta], {theta, 0, 2*Pi}, Assumptions -> {Abs[z] < 1}]
I get a result of 0 when the correct result is
z/(-2+z^2)
If I change the assumptions to {z<1,z>-1} it gives the right result.
Is this a bug or am I missing something?
Chris