===== 函数连续性 =====
{{:pasted:20151119-213237.png}}
===== 闭区间连续函数性质 =====
{{:pasted:20151119-215312.png}}
===== 第一类间断点 =====
{{:pasted:20151119-214058.png}}
===== 第二类间断点 =====
{{:pasted:20151119-214334.png}}