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  3. explain your answers name the principles you use and evaluate...

Question: explain your answers name the principles you use and evaluate...

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Explain your answers, name the principles you use, and evaluate numerical expressions.

(1) Let f :A - B and g: B-Cbe two functions. For each of the statements below, decide whether it is true or false by either proving the statement if it is true or by giving a counterexample otherwise (a) If g o f is injective, then f is injective. (b) If gof is injective, then g is injective. (c) If g o f is surfjective, then f is surjective. (d) If g o f is surjective, then g is surjective.

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