New 4(3) Pairs Diagonally Implicit Runge-Kutta-Nyström Method for Periodic IVPs

<table>Efficiency curves for Problem <a href="https://static.hindawi.com/articles/ddns/volume-2012/324989/figures/#problem7">7</a>.</table>

Discrete Dynamics in Nature and Society

Figure 7: New 4(3) Pairs Diagonally Implicit Runge-Kutta-Nyström Method for Periodic IVPs 