jika f(x) = 1-x/2x dan fungsi komposisi (fog) (x) = 7x maka fungsi g(x)= a. 1-7x/14x b. 14x+1 c. 1/14x d. 14x²-1 e. 1/14x+1

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

Pembahasan :
Fog(x) = F(g(x))
7x = [1 - g(x)]/2g(x)
14x . G(x) = 1 - g(x)
14x . G(x) + g(x) = 1
G(x) (14x + 1) = 1
G(x) = 1/(14x + 1)

Opsi E.