Answer :

We have,


f = {(1, 2), (3, 5), (4, 1)} and g = {(2, 3), (5, 1), (1, 3)}


Domain of g = {2,5,1}


Now, fog(2) = f(g(2)) = f(3) = 5


fog(5) = f(g(5)) = f(1) = 2


fog(1) = f(g(1)) = f(3) = 5


fog = {(2, 5), (5, 2), (1,5) }


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