Let f: X Y be a function and A, BY be subsets of the codomain. a....

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Let f: X Y be a function and A, BY be subsets of the codomain. a. Is f-¹ (AUB) = f-¹(A) u f-¹(B)? Always, sometimes, or never? Explain. b. Is f-¹(An B) = f¹(A) n f¹(B)? Always, sometimes, or never? Explain. Let f: X Y be a function and A, BY be subsets of the codomain. a. Is f-¹ (AUB) = f-¹(A) u f-¹(B)? Always, sometimes, or never? Explain. b. Is f-¹(An B) = f¹(A) n f¹(B)? Always, sometimes, or never? Explain.

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a Always The preimage of a set is defined as the set of a... View the full answer