Dikahui fungsi f(×) =2×-4 Dan g(×) =×-7,maka rumus fungsi (gof) -1(×) adalah

(gof) (x) = (2x - 4) - 7
(gof) (x) = 2x - 11
y = 2x - 11
(y + 11)/2 = x
(gof)^-1 (x) = (x + 11)/2