Piecewisefunction is used to describe curve characteristic.
新模型采用分段函数描述曲线变化特征。
2
This article points out the methods to solve the derivative of piecewisefunction and discusses the derivative problem at point of demarcation of piecewisefunction in detail.
本文主要叙述分段函数的求导方法,并对分段函数在分界点处的求导作了细致的讨论。
3
The paper introduces the property theorem about roots of polynomial and the derivate limit theorem, by which we can study the derived number of a break point of piecewisefunction.