Jawabanmu

2014-04-05T05:42:50+07:00
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
2014-04-05T06:43:20+07:00
(g f(x)) = 4 +2x g (2+x) = 2(2+x) g (x) = 2x semoga dapat membantu...^^