本程序中定义的函数为y-2*x/y，是使用宏来定义的。读者可安需要行新定义函数-the procedures defined in the function y-2 * x / y, is to use the macro definition. Readers may visit the new security needs defined function

自编常微分方程初值问题的常用算法，包括折线法、改进欧拉法、4阶龙格-库塔法-Self-compiled initial value problems of ordinary differential equations commonly used algorithms, including the broken line method, improved Euler' s method, 4-order Runge- Kutta method

2个数据互相影响的欧拉折线法的编程 可用于生物种群的计算(Forward Euler Method)