Dik f(x) = 2x+5 G(x) = 1/3x+2 x ≠2/3 Dit gof(1) =?

gof (X) = 1/3 (2x+5) + 2
              2/3 x + 5/3 + 2
 = 2/3 x + 11/3 
2/3 (1) + 11/ 3 
= 13/3

langsung aja y 

(gof)(x) = g{f(x)}

= 1/3(2x+5) + 2
= 1 / 6x + 15 + 2
= 1 / 6x + 17

(gof)(1) = 1 / 6+17
(gof)(1) = 1/23

semoga berguna +_+