ditentukan oleh f(x) = 2x + 4 dan fungsi komposisi (f o g) (x) = 4x^2 + 2x, maka g(x) =.....

(fog)(x) = 4x² + 2x
2 . g(x) + 4 = 4x² + 2x
g(x) = (4x² + 2x - 4)/2
g(x) = 2x² + x - 2

f(x) = 2x + 4
fog (x) = 4x^2 + 2x
g(x) = ?

f [g(x)] = fog (x)
2[g(x)] + 4 = 4x^2 + 2x
2[g(x)] = 4x^2 + 2x - 4
g(x) = (4x^2 + 2x - 4) / 2
g(x) = 2x^2 + x -2


Semoga membantu :)