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MathGroup Archive 2009

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Lower Bound on Parameters in NonlinearFit, Mathematica 5.2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95984] Lower Bound on Parameters in NonlinearFit, Mathematica 5.2
  • From: Meaghan <FreeCaptive6914 at gmail.com>
  • Date: Sat, 31 Jan 2009 06:42:43 -0500 (EST)

Hello, I am trying to fit a hyperbola to data sets using
NonlinearFit.  For many data sets, it's working perfectly, but for
others it chooses the "wrong" hyperbola.  I believe if I could put a
lower bound on one of my parameters, my problem would be fixed.
(Seeding with different values hasn't quite fixed the problem.)  Is
there a way to place a lower bound on a parameter in Mathematica 5.2?
Thanks so much!


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