Question

Diketahui fungsi f(x) = 2x pangkat 2 - 3x +4 dan g(x) = x+2. Fungsi komposisi (f o g) (x) = ...

Answer 1

Fog(x) = f(g(x))
fog(x) = 2(g(x))² - 3(g(x)) + 4
fog(x) = 2(x+2)² - 3(x+2) + 4
fog(x) = 2(x²+4x+4) - 3x - 6 + 4
fog(x) = 2x²+8x+8 - 3x - 2
fog(x) = 2x² + 5x + 6