MathGroup Archive: July 2001 [00401]

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Mathematica 3.0 finds root but Math 4.0 does not

To: mathgroup at smc.vnet.net
Subject: [mg30061] Mathematica 3.0 finds root but Math 4.0 does not
From: Georg Goetz <georg.goetz at univie.ac.at>
Date: Thu, 26 Jul 2001 01:19:58 -0400 (EDT)
Organization: Vienna University, Austria
Sender: owner-wri-mathgroup at wolfram.com

Hi!
Using the secant method, Mathematica 3.0 produces nice results with the
FindRoot command. With the same starting values and options, FindRoot
does not converge, however, when using Mathematica 4.0. 

I also have problems with old files, because the ordering of the
(multiple) roots seems to have changed. 

Any hints or explanations?

Thanks

Georg

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