f(x)= x+2 / x-1 ; x tdk smdgn 1. dan g(x) = x-3. (fog)^-1(x)???

Ini ya kak, kalo kurang ngerti komen aja

Bab Fungsi
Matematika SMA Kelas XI

(fog) (x) = (x - 3 + 2) / (x - 3 - 1)
(fog) (x) = (x - 1) / (x - 4)
(fog)^-1 = (4x - 1) / (x - 1)

p(x) = (ax + b) / (cx + d)
p^-1 (x) = (-dx + b) / (cx - a)