Diketahui fungsi f(x) = x + 2/x –

Diketahui fungsi f(x) = x + 2/x – 5 dan g(x) = 2x + 3, maka (g o f)-1(x) = ….
A.5x + 11/x – 5
B.5x – 1/x + 11
C.5x – 11/x – 5
D.x – 5/5x – 11
E.x + 5/5x – 11
Pembahasan:

Jawaban: C