龙格-库塔(Runge-Kutta)方法是一种在工程上应用广泛的高精度单步算法。本程序为4阶龙格-库塔法的matlab文件，用于求解微分方程。-Runge- Kutta (Runge-Kutta) method is a widely used in engineering high-precision single-step algorithm. This program is a 4-order Runge- Kutta method matlab file for solving differential equations.