Introduction - If you have any usage issues, please Google them yourself
Numerical integration algorithm for the calculation of first-order differential equations: through the preparation of programming language, the use of Euler and forecast correction, Runge-Kutta method of achieving x1 differential = x2 x2 differential = x3 x3 differential =- 800* x1-80* x2-24* x3+ sin (t) y = 800x1 computing