1. if X is a set, find I think it's but I don't know how to show it 2. if , is necessarily justify your answer
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Is there a single element in both of those sets? As for #2. I have no idea what could mean. In the last century older mathematicians such as R L Moore used it to mean union. Is that the case here?
oops I just held the shift button it's X = Y
Originally Posted by jbpellerin it's X = Y Now you finish it.
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