$\displaystyle\lim_{x\rightarrow 0 +} f(x)$, $\displaystyle\lim_{x\rightarrow 0 -} f(x)$ of $y=f(x)=\begin{cases} g(x), & \text{if } x\neq a \\ \gamma, & \text{if } x= a \end{cases}$

알림 (Notice)