di fungsi f (x)=6x-7 dan g (x) =9x + 14, tentukan a.(f o g)(x) b.(g o f)(x)

Jawab :

f(x) = 6x - 7
g(x) = 9x + 14

(f o g)(x) = 6(9x + 14) - 7
              = 54x + 84 - 7
              = 54x + 81

(g o f)(x) = 9(6x - 7) + 14
              = 54x - 63 + 14
              = 54x - 49


Semoga membantu

Mapel : Matematika
Materi : Fungsi Komposisi
Kelas : 8, 10

f(x) = 6x - 7
g(x) = 9x + 14

a] Nilai (f o g)(x)

(f o g) (x) = f(g(x))
= 6(9x + 14) - 7
= 54x + 84 - 7
= 54x + 77

b] Nilai (g o f) (x)

(g o f) (x) = g(f(x))
= 9(6x - 7) + 14
= 54x - 63 + 14
= 54x - 49