Prove that A is a subset of B iff B' is subset of A'
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Originally Posted by instrument.santosh Prove that A is a subset of B iff B' is subset of A' i would prove both direction via a direct proof so to start you off (=>) Assume . Then, . Now, let .....(you want to show that this implies ) (<=) For the converse, assume . Then . Now, let .....(you want to show that this implies ) now continue
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