diketahui f(x)=2x-4 dan g(x)=3x+1 hitung (gof) -¹(2)

(g o f) (x) = g(2x-4) = 3(2x-4) + 1
= 6x - 12 + 1
= 6x - 11

Misal y = 6x - 11
Maka x = (y + 11)/6

Sehingga (g o f)-¹ (2) = (2 + 11)/6
= 13/6