RE: FindRoot problem
- To: mathgroup at smc.vnet.net
- Subject: [mg40043] RE: [mg40032] FindRoot problem
- From: "David Park" <djmp at earthlink.net>
- Date: Mon, 17 Mar 2003 03:33:35 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Robert, I think that RootSearch is just a more robust algorithm that FindRoot, which is probably pretty old code. There have been a number of postings to MathGroup about FindRoot where RootSearch solved the problem. People should be aware of it and WRI might even consider including it in the standard distribution. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Pigeon, Robert [mailto:Robert.Pigeon at drdc-rddc.gc.ca] To: mathgroup at smc.vnet.net Thanks David, It works! But, I would like to understand why Mathematica's FindRoot is not working when the function has conditions! BTW, my real equation had, as second condition, x<= 1.535, and when I applied RootSearch with 1.54 as upper limit, it finds just the first root (1.4811). So the conditions apply with the search! That is great ! Robert