【摘要】 分段函数在分段点处可导性问题是高等数学教学上的重点和难点,给出函数在分段点处可导的一个充分条件,利用它来研究分段点处的可导性要比用定义简便很多。更多还原

【Abstract】 The problem of the derivability at the piecewise point of the piecewise function is the key and difficult point in the teaching of Higher Mathematics. A sufficient condition for a function to be derivable at a piecewise point is given,and it is much simpler to use it to study the derivability at the piecewise point.更多还原