Dik f(x)=4x dan g(x)=6-10x ditanya (gof)^-1(x)=

(gof)(x)
g(f(x))
g(4x)
= 6 - 10(4x)
= 6 - 40x

y = 6 - 40x
40x = 6 - y
x = (6 - y)/40
(gof)^-1 (x) = (6 - x) / 40

Mapel : Matematika
Kelas : X SMA
Bab : Fungsi Komposisi dan Fungsi Invers

Pembahasan :
Gof(x) = g(f(x))
Gof(x) = 6 - 10(4x)
Gof(x) = 6 - 40x
y = 6 - 40x
40x = 6 - y
x = (6 - y)/40
Gof^-1(x) = (6 - x)/40