f(x)=(u(x))/x型函数的n阶导函数

Higher Derivative of Function as f(x)=u(x)/x

采用递推法证明了 u(x)x 的高阶导函数的一般表达式 ,可方便地利用计算机编程 .得到特殊点极限的表达式 。

In this paper,the author proves the common formula of the higher derivative of the u(x)x by using the recurrence method.The common for mula can be programmed conveniently by computer.A formula with a limit of the special point can be available.Such a formula is simple and practical.