Jika f(x)=3x+7 dan g(x) = x-3/2x+1 fungsi komponen f •g (x)

f(x) = 3x + 7
g(x) = (x - 3)/(2x + 1)

(fog)(x)
= 3(x - 3)/(2x + 1) + 7
= (3x - 9 + 7(2x + 1))/(2x + 1)
= (17x - 2) / (2x + 1)