Diketahui f(x) = 3x – 4 dan g(x) = 2x – 9.
Maka (g ∘ f)(2) adalah
–5
Pembahasan:
f(x) = 3x – 4 dan g(x) = 2x – 9
(g ∘ f)(x) = 2(3x – 4) – 9
= 6x – 8 – 9
= 6x – 17
(g ∘ f)(2) = 6(2) – 17
= 12 – 17
= –5