Homework Statement
simplify:
1. (-∞, -2) ∩ [-2, ∞)
2. (-∞, 5] ∩ [5, ∞)
3. (-∞, 5) U (4, ∞)
4. (-∞, 5) ∩ (3, ∞)
Homework Equations
The Attempt at a Solution
It has been so long since I last saw a problem set like that. Honestly, I don't even remember how these...