jika f(x)= 3x + 7 dan g(x) = 6/x ,nilai ( f°g)(2)=

f(x)= 3x + 7 dan g(x) = 6/x ,nilai ( f°g)(2)=


jawab :

(f°g)(x)= 3(6/x)+7
= 18/x + 7
[tex] = \frac{18 + 7x}{x} [/tex]
(f°g)(2) =
[tex] \frac{18+ 7(2)}{2} = \frac{18 + 14}{2} = \frac{32}{2} = 16[/tex]