jika f(x + 1) = x - 3 dan g(x)= x^2 - 2x maka nilai (f^-1 o g)(3) adalah....

g(x) = x^2 - 2x
g(3) = 3^2 - 2(3)
g(3) = 9 - 6
g(3) = 3

f(x + 1) = x - 3
f-1(x - 3) = x + 1
f-1(6-3) = 6+1
f-1(3) = 7

sehingga
(f-1○g)(3)
f-1(g(3))
f-1(3)
7