The Use of Phase Lag and Amplification Error Derivatives for the Construction of a Modified Runge-Kutta-Nyström Method

<table>Efficiency for the Schrödinger equation using <i>E </i>= 53.588872.</table>

Abstract and Applied Analysis

Figure 1: The Use of Phase Lag and Amplification Error Derivatives for the Construction of a Modified Runge-Kutta-Nyström Method 