Jawabanmu

2014-03-02T20:21:28+07:00
(f^-1og^-1)(x) = (gof)^-1(x)
(gof)(x)=15/(x+2)

(gof)^-1(x)=15/x -2
1=15/x -2
3 = 15/x
x = 5
2014-03-02T20:21:30+07:00
F ' (x) = x - 2
g ' (x) =15/x

f ' o g ' = 1
15/x - 2 = 1
15/x = 1 + 2
15/x = 3
x = 15/3
x = 5