Re: NDSolve Interpolating Function Range too small!

*To*: mathgroup at smc.vnet.net*Subject*: [mg26369] Re: NDSolve Interpolating Function Range too small!*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Wed, 13 Dec 2000 02:41:27 -0500 (EST)*Organization*: Universitaet Leipzig*References*: <914nhe$e4h@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, NDSolve[] print out some nice error messages, and it would be helpful if you can can include it. I expect that your equations do not evaluate to numbers at the starting point or you are starting in a singular point of the differential equation. Regards Jens flashboltzmann at my-deja.com wrote: > > I'm using NDSolve to numerically solve three very complicated second > order differential equation. When NDSolve does the calculation though > the interpolating function always has a range in the 10^-30 something > range. This is useless when I try to plot the solutions to the equation > because I need it on a range of up to 100. How do I tweak mathematica > (or my equation) to get a decent range from the interpolating function? > Also, when I am plotting is there any way to tell mathematica not to > extrapolate a solution if it hits an undefined point? > > Sent via Deja.com http://www.deja.com/ > Before you buy.