Jika fog(x)=2x+4 dan g(x)=x+1, maka f(x)=......

(f•g)(x) = 2x + 4
f (g(x)) = 2x + 4
f (x+1) = 2x + 4
*dimisalkan x+1 = p -> x = p - 1
f (x+1) = 2x + 4
f (p) = 2(p-1) + 4
f (p) = 2p -2 + 4
f(p) = 2p + 2
f(x) = 2x + 2

maaf kalau salah