jika f (x) = x+2 dan (gof) (x) =2x pangkat 2 + 4x+1 maka g (x)=.......

(g○f)(x) = 2x^2 + 4x + 1
g(f(x)) = 2x^2 + 4x + 1
g(x+2) = 2x^2 + 4x + 1
g(x+2) = 2(x+2)^2 - 4(x+2) + 1
g(x) = 2x^2 - 4x + 1

smga mmbantu

Bab Fungsi
Matematika SMA Kelas XI

(gof) (x) = 2x² + 4x + 1
g(x + 2) = 2x² + 4x + 1
g(x - 2 + 2) = 2(x - 2)² + 4(x - 2) + 1
g(x) = 2(x² - 4x + 4) + 4x - 8 + 1
g(x) = 2x² - 4x + 1