RE: Finding multiple roots
- To: mathgroup at smc.vnet.net
- Subject: [mg38250] RE: [mg38225] Finding multiple roots
- From: "Harvey P. Dale" <h.dale at atlanticphilanthropies.org>
- Date: Tue, 10 Dec 2002 04:10:05 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Novak: Ted Ersek's package, RootSearch, may help. You can find it at: http://www.mathsource.com/Content/WhatsNew/0211-734 Best, Harvey Harvey P. Dale University Professor of Philanthropy and the Law Director, National Center on Philanthropy and the Law New York University School of Law Room 206A 110 West 3rd Street New York, N.Y. 10012-1074 tel: 212-998-6161 fax: 212-995-3149 -----Original Message----- From: Novak Petrovic [mailto:novak at itee.uq.edu.au] To: mathgroup at smc.vnet.net Subject: [mg38250] [mg38225] Finding multiple roots Hi all, I'm trying to find roots of the characteristic equation of a dielectric-loaded waveguide. There are multiple roots of the equation and I use FindRoot to find them. The sequence of roots is very important in my further calculations. Is there a routine or a clever way to (numerically) find all the roots of an equation in a predefined values? As it is now I have to look for each individual root manually and it gets a bit tedious as the number of required modes increases. Thanks a lot. -- Regards, Novak Petrovic novak at itee.uq.edu.au