1.f(x)=2x-4 dan (gof)(x)=2x+1 maka g(x)

Materi: Komposisi Fungsi (Reguler)

g(f(x)) =2x+1
g(2x-4) = 2x + 1
g(2x-4)=(2x-4)+5
g(x) = x +5
Diperoleh g(x) = x + 5

misal
f(x) = p
2x - 4 = p
x = (p + 4)/2

↓
(gof)(x) = 2x + 1
g(p) = 2((p + 4))/2 + 1
g(p) = p + 4 + 1
g(x) = x + 5