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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