Given $S \subseteq \mathbb{R}^2$
We get the following: $$S_1 = [-1, 1] \times [-1, 1], \: S_2 = \{ \epsilon \in S_1 : || (\epsilon_1, 3)||\leq 5\epsilon_2 \}, \text{and }S_3 = \{ \epsilon \in \mathbb{R}^2 : 1-3\epsilon_1t + \epsilon_2 t^2 \geq 0\text{ for all }0 \leq t \leq 1\}$$
How can I draw these sets? I do not know how to solve it with the epsilons and t. Does somebody have a hint to tackle such a problem?