求解动力微分方程的数值解,包括位移、速度、加速度。-To solve the dynamic numerical solution of differential equation, including displacement, velocity and acceleration.

采用matlab编写的常微分方程的数值解法，有算例，以及改进龙格库塔方法。-The numerical solution of ordinary differential equation by using Matlab prepared, with examples, and the improvement of the Runge Kutta method.