tentukan f(x) jika diketahui g(x) = 4x-1 dan (gof) (x) = x + 5

Bab Fungsi Komposisi
Matematika SMA Kelas X

(gof) (x) = x + 5
g(f(x)) = x + 5
4 . g(x) - 1 = x + 5
4 . g(x) = x + 5 + 1
g(x) = (x + 6)/4
g(x) = (1/4) . (x + 6)