二阶循环数列方程的特征根解法

The way to solve latent root of the second order cyclic number equations

就应用常微分方程的常系数线性微分方程解法的理论解决递归数列中二阶循环数列方程问题进行了论述 ,由此可看到高等数学对初等数学的指导作用 .

It is discussed on how to apply the theory of ordinary differential equations about the solving process of linear differential equations with constant coefficients to solve the problem about cyclic number sequence of the second order equations in the recursive number sequence, thereout, we can see the directive function of the higher mathematics to elementary mathematics.