Jawabanmu

2014-03-12T17:39:50+07:00
(gof)(x)=3x+1
g(x)=2x

(gof)(x)=g(f(x))
3x+1=2 f(x)
f(x)= (3x+1)/2

(fog)(x)=
f(g(x))=
(3(2x)+1)/2=
(6x+1)/2