Question

Jika f(x) = 3x - 2 dan (fog)(x) = 3x kuadrat - 5 maka g(1/2) = ...

Answer 1

F(x) = 3x - 2
(fog)(x) = 3x² - 5
f(g(x)) = 3x² - 5
3g(x) - 2 = 3x² - 5
3g(x) = 3x² - 3
g(x) = x² - 1
g(1/2) = (1/2)² - 1 = 1/4 - 1 = -3/4