Diketahui f(x)=2+x dan (g.f)(x)=4+2x tentukan g(x)

F(x) = 2+x
a = 2+x
x= a-2

(gof)(x) = 4+2x
g(f(x)) = 4+2x
g(a) = 4+2(a-2)
g(a) = 2a
g(x) = 2x

(g f(x)) = 4 +2x
g (2+x) = 2(2+x)
g (x) = 2x semoga dapat membantu…^^