Question

Jika f(x) = 2x + 3 dan (f o g) = 2x2 + 6x – 7, maka g(x)

Answer 1

f o g)(x)     = 2x2 + 6x – 7
f(g(x))        =  2x2 + 6x – 7 
2(g(x)) + 3 = 2x2 + 6x – 72
(g(x))         =  2x2 + 6x –10
g(x) = x2 + 3x – 5