f-' (x) = 3x kuadrat+2 ,g-' (x) = akar x+1 . (gof)-' (x) =

f-¹(x) = 3x² + 2
g-¹(x) = √(x+1)
maka
(gof)-¹(x) atau (f-¹og-¹)(x)
= 3(√(x+1))² + 2
= 3(x+1)+2
=3x+3+2
=3x+5