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  3. 2 suppose x and y are sets and f ...

Question: 2 suppose x and y are sets and f ...

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2.) Suppose X and y are sets and f : X-> y is a function. Suppose A is a set, and for each λ E A, Βλ is a subset of Y. (a) Prove that heM-1(B) f-ı (υλεΑΒ). Remark: In class we showed that f-i (ỦAEABA) υλεΜ-1 (B λ), so now we have (b) Prove that f-ι (ηλεΑ&J-NeM-1 (B) ЕЛ

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