(fog)(x)=3x-5 g(x)= 2x-1 f(x)=.......?

(fog)(x) = 3x-5
f (g (x)) = 3x-5
f (2x-1) = 3x-5
misal a=2x-1
maka x = (a+1) / 2
maka, f (a) = 3 ( a+1 / 2) -5
f (a) = 3 (a+1) /2 - 5
f (x) = 3 (x+1) / 2 - 5
f (x) = 3 (x+1) /2 - 10/2
f (x) = (3x+3-10) / 2
f (x) = (3x-7)/2

Kelas 10 Matematika
Bab Fungsi Komposisi

(fog) (x) = 3x - 5
f(2x - 1) = 3x - 5
f(2 . x/2 - 1) = 3 . x/2 - 5
f(x - 1) = 3x/2 - 5
f(x + 1 - 1) = 3 (x + 1)/2 - 10/2
f(x) = (3x + 3)/2 - 10/2
f(x) = (3x + 3 - 10)/2
f(x) = (3x - 7)/2