Question 1
What is the key fact about the continuous image of a compact space?
Question 2
Let $f:[0,1]\to \mathbb{R}$ be continuous. Which statement must be true about $f([0,1])$?
Question 3
Which theorem is used to conclude that $f(K)$ is compact when $K$ is compact and $f$ is continuous?
Question 4
Suppose $K$ is compact and $f:K\to Y$ is continuous. Which open-cover idea is central to proving $f(K)$ is compact?
Question 5
Which statement is true in general?