A.-35×+39
B.-25×+39
C.-15×+39
D.-15×+28
E.-15×+35
Diketahui fungsi f(×)=5×+4 dan g(×)=-3×+7.Maka hasil dari (fog)(×)=
Jawab:
c. -15x + 39
Penjelasan dengan langkah-langkah:
f(x) = 5x + 4
g(x) = -3x + 7
(fog)(x) = f(g(x))
= 5 (-3x + 7) + 4
= -15x + 35 + 4
= -15x + 39
komposisi fungsi
(fog)(x)
= f(g(x))
= f(3x + 7)
= 5(3x + 7) + 4
= 15x + 35 + 4
= 5x + 39