Question

Fungsi f : R → R, g : R → R, ditentukan oleh f(x) = x + 2 dan g(x) = 2x. maka (fog)^-1(x) adalah.... Terima Kasih :)

Answer 1

Verified answer

Kelas 10 Matematika
Bab Fungsi Komposisi

(fog) (x) = f(g(x))
y = f(2x)
y = 2x + 2
y - 2 = 2x
x = (y - 2)/2
(fog)^-1 (x) = (x - 2)/2
(fog)^-1 (x) = (1/2) . (x - 2)