Mohon bantuannya ya, buat bahan remidi

Bab Fungsi Komposisi
Matematika SMA Kelas X

19] f(x) = (ax + b) / (cx + d)
f^-1 (x) = (-dx + b) / (cx - a)

f(x) = (3x - 5) / (2x + 1)
f^-1 (x) = (-x - 5) / (2x - 3)
f^-1 (0) = (0 - 5) / (0 - 3)
f^-1 (0) = 5/3
◎◎ D ◎◎

20] (gof) (x) = g (x - 2)
(gof) (x) = 4(x - 2) - 3
4x - 11 = y
4x = y + 11
x = (y + 11)/4
(gof)^-1 (x) = (x + 11)/4 = 2
x + 11 = 2 . 4
x = 8 - 11
x = -3
◎◎ A ◎◎