Hi, I don't know how to prove this. What is the result of UxA? I know AxØ=Ø but have no idea about universal set. Thanks for any help.
Last edited by truevein; Nov 6th 2010 at 01:37 PM.
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Originally Posted by truevein Hi, I don't know how to prove this. What is the result of UxA? I know AxØ=Ø but have no idea about universal set. Thanks for any help. I believe you're trying to prove that . Is that right?
Really sorry about the displacement of the parenthesis, I corrected my question.
We know that , the universe. So if then because we know so . If then . Again we know that so . So .
Last edited by Plato; Nov 6th 2010 at 03:12 PM.
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