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eulstdnt.m, rk4.m

These are numerical routines called by eulerplot, num3plot, and rk4plot to create numerical solutions to the ODE. eulstdnt.m uses Euler's method. rk4.m uses a 4th order Runge-Kutta method. eulstdnt.m requires the variable eulerfcn, which you will enter into initn.m.

Michael Renardy