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Living_dreams
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prove the following set equality is valid if and only if sets A and B are disjoint.
( A U B)  B = A
 one year ago
 one year ago
Living_dreams Group Title
prove the following set equality is valid if and only if sets A and B are disjoint. ( A U B)  B = A
 one year ago
 one year ago

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slotema Group TitleBest ResponseYou've already chosen the best response.0
Suppose that A and B are joint. dw:1360843065418:dw If you remove B, you'll end up with something like a cresent and not something like A. That's the idea, now it's up to you to write it in a more formal way. Hint: \[A\cup B = A + B  ??\]
 one year ago
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