Question

Let f : {2, 3, 4, 5} → {3, 4, 5, 9} and g : {3, 4, 5, 9} → {7, 11, 15} be

functions defined as f(2) = 3, f(3) = 4, f(4) = f(5) = 5 and g (3) = g (4) = 7 andg (5) = g (9) = 11. Find gof​

Answer 1

Solution We have gof(2) = g (f(2)) = g (3) = 7, gof (3) = g (f(3)) = g (4) = 7,gof(4) = g (f(4)) = g (5) = 11 and gof(5) = g (5) = 11.