Jika f(x) = 5x + 2 dan g(x) = 1/4 x2, nilai (f o g)(4) = ….
Jawab:
f(x) = 5x + 2 dan g(x) = ¼ x2
g(4) = ¼ . 42 = 4
(f o g)(4) = f(g(4))
= f(4)
= 5(4) + 2
(f o g)(4) = 22