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MathGroup Archive 2004

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Nonlinear diff equation help

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51619] Nonlinear diff equation help
  • From: jboy751 at yahoo.co.uk (Dimitris)
  • Date: Wed, 27 Oct 2004 01:54:49 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

I have a nonlinear equation: 

-A + B y[x]^-1 + C y'[x] + D y''[x]=0

with boundary conditions:

y[inf]=B
y'[inf]0;

Trying to solve with NDSolve from x=0 to x=100 and get (300=infinity):

NDSolve::ndnum: Encountered non-numerical value for a derivative at x
== \
300.`.

Any ideas?

Thanks
Dimitris


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