10楼: Originally posted by xyzxyzxyz_xz at 2015-12-04 01:16:46
上连续$\lim_{x \to 0}supf(x)\leqslant f(x_{0})$
下连续$\lim_{x \to 0}inff(x)\geq f(x_{0})$

11楼: Originally posted by xyzxyzxyz_xz at 2015-12-04 01:23:48
上连续latex
\lim_{x \to 0}supf(x)\leqslant f(x_{0})
/latex

下连续latex
\lim_{x \to 0}inff(x)\geq f(x_{0})
/latex...

13楼: Originally posted by xmcchenchen at 2015-12-04 13:02:53
左右连续只考虑自变量从左或右单边趋近x0，上,下半连续都考虑自变量从两边趋近x0的情况