- #1
dracox
- 5
- 0
Homework Statement
How do I show that a simple set is closed?
Ex: the set of points defined by the parabola y=x^2
The Attempt at a Solution
Well, a set is closed iff it contains all of its limit points. So, I want to show that this is true for the given set. I'm not exactly sure how to do this. Any help?