3. A) For a function f: R → R defined by f(x) = x³ - 4, find the following, using images and inverse images, given that A = {-1, 1, 2} and B = {-5,4,-12, 23,60} i) f-¹(B) NA ii) f(A) Uf-¹(B) B) Show if the expression f(x) = x³ - 4 defined in A) above has an inverse by first finding out if it is bijective. Write its inverse if it has.

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A: a) finding the inverse of f(x)

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Q: Consider the possible functions from [7] to [9].  How many in which f-1 is not a functio

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