Continuity (연속) 이란If $S\subseteq \mathbb{R}^n$, then a function $f:S\to \mathbb{R}$ is continuous at $\textbf{a} \in S$ if$$\begin{equation}\label{cont.def}\forall \varepsilon >0, \ \ \exists \delta>0 \mbox{ such that if } \mathbf x \in S \mbox{ and } |\mathbf x - \mathbf a|\end{equation}$$ 만약 $f$가 모든 $S$의 point에서 continuous하다면, $f$ 는 연속함수(continuous function)임.2024.02.27 - [.../Math] - [Math] i..