Copyright © 2010 Norazak Senu et al. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
An explicit Runge-Kutta-Nyström method is developed for solving second-order
differential equations of the form where the solutions are oscillatory. The method has zero-dissipation with minimal phase-lag at a cost of three-function
evaluations per step of integration. Numerical comparisons with RKN3HS, RKN3V, RKN4G, and RKN4C methods show the preciseness and effectiveness of the method developed.