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From: "?nder " <onderbey_@hotmail.com>
Newsgroups: comp.soft-sys.matlab
Subject: ode function problem: Unable to meet integration tolerances and RCOND = NaN
Date: Mon, 2 Nov 2009 14:24:03 +0000 (UTC)
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Hi,i have a problem with my ode function, it gives these warnings and gives NaN or no solutions:

...
Warning: Matrix is singular, close to singular or badly scaled.
         Results may be inaccurate. RCOND = NaN.
> In ode15s at 617
Warning: Matrix is singular, close to singular or badly scaled.
         Results may be inaccurate. RCOND = NaN.
> In ode15s at 617
Warning: Failure at t=0.000000e+000.  Unable to meet integration tolerances without reducing the step size below the smallest value allowed (0.000000e+000) at time t.
> In ode15s at 686
Warning: Divide by zero.
Warning: Divide by zero.


Although i've tried many things, i couldn't make my programme work. What can i do to solve the problem, anyone has a guess?