(d) Suppose that ƒ: P → Q and g: Q → R are functions. (i) Show that the composite function gof : P → R is bijective if both ƒ and g are bijective. (ii) If gof is bijective, show that (gof)−¹ = f−¹og¯¹.

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A:

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A:

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A: See full solution below

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A: