Numerical methods for ordinary differential systems: the initial value problem
Numerical methods for ordinary differential systems: the initial value problem
Stability of Runge--Kutta methods in the numerical solution of equation u'(t) = au(t) + a0u([t])
Journal of Computational and Applied Mathematics
Monotone method for first-order functional differential equations
Computers & Mathematics with Applications
Oscillation of a Differential Equation with Fractional Delay and Piecewise Constant Arguments
Computers & Mathematics with Applications
Boundary value problems for a class of impulsive functional equations
Computers & Mathematics with Applications
Stability of θ-methods for advanced differential equations with piecewise continuous arguments
Computers & Mathematics with Applications
Journal of Computational and Applied Mathematics
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The paper deals with the preservation of oscillations of the Runge-Kutta method for equation x^'(t)+ax(t)+a"1x([t-1])=0. It is proved that oscillations of the analytic solution are preserved by the Runge-Kutta method. Special interpolation functions of the numerical solutions are given. It turns out that zeros of the interpolation function of the numerical solution converge to ones of the analytic solution with the same order of accuracy as that of the corresponding Runge-Kutta method. Some numerical experiments are presented.