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 Author Comment/Response Robert Hoy 07/30/01 02:19am I am trying to numerically solve a system of 3 coupled nonlinear ordinary differential equations. I am reasonably sure that the only singularity in the system is for one variable at t= +infinity. I have also checked carefully for nonnumeric quantities in the equations and can't find any. t is the independent variable. When I try to solve the system I get NDSolve::ndnum : Encountered non-numerical value for a derivative at t = 1.8066...`*^38. This message occurs _regardless_ of the initial conditions I enter. I assume this means there's some problem at t = 1.8066*10^38. I only want to solve the equations for 0 < t < 100, so I don't need Mathematica to evaluate the equations for t >> 100. How can I get around this? URL: ,

 Subject (listing for 'unwanted evaluation at very large T') Author Date Posted unwanted evaluation at very large T Robert Hoy 07/30/01 02:19am Re: unwanted evaluation at very large T Forum Modera... 08/09/01 4:06pm
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