- #1
zendani
- 15
- 0
If A U B = A and A n B = A
can we say A = B ?
1: A U B = A => B C A => B n A = B
2: A n B = A => A C B => A U B = B
1,2 => A=B
can we say A = B ?
1: A U B = A => B C A => B n A = B
2: A n B = A => A C B => A U B = B
1,2 => A=B