Question: Exercise 8.9. Let A = P(P(N) ) and B = N. Define f : A - B to be the function where f(S) = [

Exercise 8.9. Let A = P(P(N) ) and B = N. Define f : A - B to be the function where f(S) = [ Jx. CES (a) Find f({ {1, 2}, {3, 4} }). (b) Is f injective? Surjective? Bijective

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