Question

Let f : {1, 3, 4} → {1, 2, 5} and                   g : {1, 2, 5} → {1, 3} be given by
f = {(1, 2), (3, 5), (4, 1)} and                     g = {(1, 3), (2, 3), (5, 1)}.                     Write down gof.

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