MathGroup Archive 2005

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RootSearch-missing root

  • To: mathgroup at
  • Subject: [mg62217] RootSearch-missing root
  • From: nastazjaf <nastazjaf at>
  • Date: Wed, 16 Nov 2005 02:28:21 -0500 (EST)
  • Sender: owner-wri-mathgroup at

	I have a problem with the RootSearch. I have searched the archive and 
the RootSearch Examples and couldn't find an answer or at least the 
similar problem. The RootSearch doesn't find one of the roots. There are 
three roots, all three are clearly resolved when two functions are 
plotted but RootSearch finds only two of them. I tried to play with the 
options and with different values of xmax and xmin, and it just doesn't 
see it. FindRoot finds the missing root for well defined starting 
values. But I need to have all three roots. In what circumstances the 
RootSearch cannot find one of the roots?


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