Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2012-05-03 20:32:01
- mttal24
- Member
- Registered: 2012-05-01
- Posts: 23
Set Theory: Proof
Q. Show that for any sets A and B, A = (A ∩ B) ∪ (A B).
Please show me by the method of "let x∈A..."
Offline
#2 2012-05-04 00:05:20
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Set Theory: Proof
Hi mttal24
Welcome to the forum! 
For the problem use the rules:
If you have any questions,feel free to ask them here.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
Pages: 1