연속

[Math] Continuity (of Multivariate Function) and Contiguity

Continuity (연속) 이란 If $S\subseteq \mathbb{R}^n$, 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| 1.2: Limits and Continuity Our goal is to show that \[\begin{equation}\label{facta} \forall \varepsilon >0, \exists\del..