Question: Let E1 and E2 be equivalence relations on some set A. (a) Is E UE2 an equivalence relation on A? (b) Is E E2

Let E1 and E2 be equivalence relations on some set A. (a) 

Let E1 and E2 be equivalence relations on some set A. (a) Is E UE2 an equivalence relation on A? (b) Is E E2 an equivalence relation on A?

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