摘要
本文利用未知函数分解的技巧，推导出了将二阶变系数线性常微分方程化为常系数方程，或化为欧拉方程，贝塞尔方程等一些已知类型方程的充分条件．
In this paper we have used the skills of the resolution of the unknown function to induce the full conditions of some known typical equations of transforming two - order variable coefficient linear ordinary differential equations into ordinary coefficient equations, or Euler equations, Bessel equations.
关键词
变系数
线性
常微分方程
转化问题
Two-order Variable coefficient Linear ordinary differential equation
