misal f(x) = 2x + 1 dan g(x) = 3x + 4 maka (fog) (0) = .....

Diketahui :
f(x) = 2x + 1
g(x) = 3x + 4

Ditanyakan :
(f o g) (0) = ..?

Jawab :
(f o g )(x) = 2(3x + 4) + 1
                = 6x + 8 + 1
                = 6x + 9
(f o g) (0) = 6(0) + 9
                = 9

semoga membantu :)

f(g(x))= 2g(x) + 1
= 2 (3x+4) +4= 6x +8 +4 = 6X + 12
f(g(x))= 6x + 12
f(g(0))= 6 (0) +12
= 12.