Tentukan fungsi komposisi (f o g) ^ -1 Siang kak mohon dibantu

Fungsi Invers

f(x) = 5x – 4

g(x) = 3x

(fog)(x)

= 5(3x) – 4

= 15x – 4

y = 15x – 4

15x = y + 4

x = (y + 4)/15

(fog)^-1 (x) = (x + 4)/15 ✔

•

(gof)(x)

= 3(5x – 4)

= 15x – 12

y = 15x – 12

15x = y + 12

x = (y + 12)/15

(gof)^-1 (x) = (x + 12)/15 ✔