An equation of reversible pendulum is derived and used in a student experiment.
本文导出的可倒摆方程弥补了这一缺陷，也有利于教学。
Giving the definition of inverse reciprocal equation,this article discusses the types and the soultions of it.
给出了反倒数方程的定义 ,并讨论了反倒数方程的类型及解
