Improving RootSearch Package
- To: mathgroup at smc.vnet.net
- Subject: [mg31584] Improving RootSearch Package
- From: "Ersek, Ted R" <ErsekTR at navair.navy.mil>
- Date: Wed, 14 Nov 2001 03:42:05 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello Group, A few weeks ago I posted a robust RootSearch package at http://www.mathsource.com/Content/Enhancements/Numerics/0211-734 Johannes Ludsteck informed me of a rare situation in which RootSearch had a lot of trouble and would produce toublesome error messages. I have since corrected a bug in RootSearch that was the cause of the problem. I sent MathSource an update to my package, but the new version hasn't yet been posted. In the mean time I can send the new version directly to anyone who wants it. I would also like to enhance RootSearch so it can try to find all roots of a system of equations (for a specified range of values). A good implementation of this would probably use Broyden's method http://mathworld.wolfram.com/BroydensMethod.html and possibly a Line Search algorithm as explained in Setion 9.7 of the polular book Numerical Recipes in C. However, I am having a hard time understanding these algorithms. Please get in touch with me if you would like assist me in implementing one or both of these algorithms in Mathematica. ---------------- Regards, Ted Ersek See Mathematica Tips, Tricks at http://www.verbeia.com/mathematica/tips/Tricks.html