Differential equations with piecewise constant argument describe various phenomena, e.g., in biology, mechanics and electronics. Here we study a special case of these equations, namely, the equation of the form u'=F([t],u([t]))+g(t), where [t] stands for the greatest integer function and F a g are continuous functions. Our program is designed to find the solution of such equation on the interval [t0, t0+n] if the initial condition u(t0)=u0 is given. The solution is found stepwise - on each interval [t0+i-1, t0+i], i=1,...,n, separately. Further, the values of the solution at chosen points can be computed and the graph of the solution is shown.

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You may use the software for research and scientific activities free of charge. In all other cases contact RNDr. M. Novák, Ph.D., Vysoké učení technické v Brně, UMAT FEKT, Technická 8, 616 00 Brno, email: novakm@feec.vutbr.cz, phone: 541143135.

I. Hlavičková, G. Piddubna supported by FEKT-S-11-2/921 "Vlastnosti řešení funkcionálních diferenciálních a diferenčních rovnic"