Question: Question 2: (i) Prove that if f : X > Y is injective and A, B C X are any subsets, m1 n B) =

Question 2: (i) Prove that if f : X > Y is injective and A, B C X are any subsets, m1 n B) = M) n f(B)- (ii) Give an example to Show that the previous statement need not hold if f is not injective

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