【摘要】 分段函数的求导,在其连续区间,可用初等函数微分法求解;在其间断点处一般用导数定义求解。只有当分段函数在其分段点处满足一定条件时,才可不必用导数定义求解,而可用导函数取极限的相对简便方法求解。更多还原

【Abstract】 The derivation of segment function can be worked out with the method of primary functional differentiation in its continuity area, while at its discontinuity point it is usually worked out with derivate definition. The way of derivate definition can not be used only when the segment function at the segment points meets certain terms and in this case relatively the simple way of passing the derivative of the function to the limit is suitable.更多还原