Jika diketahui fungsi f(x) = x2 + 2x + 2 dan g(x) = 2x – 3. Maka fungsi (f ₀ g)(x) adalah….

jawab

f(x) = x²  + 2x + 2
g(x)= 2x - 3

(fog)(x) = f { g(x)}
= f {2x-3}
= (2x-3)² + 2(2x -3) + 2
= 4x² - 12x + 9 + 4x - 6 + 2
= 4x² - 8x + 5