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Posted: **Thu May 12, 2022 7:02 am**

: Question 4 5 Pts Each Let F A B And G B C Be Functions Their Composition G Of Is The Function Gof A C Given 1 (25.11 KiB) Viewed 26 times

Question 4. (5 pts. each) Let f: A B and g: B - C be functions. Their composition g of is the function gof: A - C given by the formula (g(x) = g(f()). A. Prove that if f and g are injective, then so is gof. B. Prove that if f and g are surjective, then so is g•f.