RE: A bug of Integrate[] in Mathematica 4.1
- To: mathgroup at smc.vnet.net
- Subject: [mg27567] RE: A bug of Integrate[] in Mathematica 4.1
- From: bruce.detterich at ieee.org (Bruce Detterich)
- Date: Wed, 7 Mar 2001 04:08:08 -0500 (EST)
- Organization: The Math Forum
- References: <96vv8p$lv@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
The bug appears also to occur in version 4.0.1.0. I am a Premier subscriber, and have received the 4.1 upgrade but have not installed it yet. I played a little with variations of your problem using v4.0, for example: Integrate[1-x^a,{x,0,1}]/.a->-0.9 and the problem persists, as I expected. I suspect you've done the same using v4.1. I have owned Mathematica for a couple of years, but so far I am not a frequent user. So, there could be something more sophisticated to try, for example treating it as a limit problem. This is certainly worth tracking down, and I'm glad you found it. Thankfully, I've kept my earlier versions including 3.0. I'm also going to post a note that it APPEARS that the books that come with the 4.1 upgrade are actually just the 4.0 books. That's based on a couple of examinations based on the 4.1 changes posted on Wolfram's web site.