diketahui f(x) = x2 - 4 dan (fog) = 2x-3 tentukan g(4)

(fog)(x) = 2x - 3
f(g(x)) = 2x - 3
( (g(x) )^2 - 4 = 2x - 3
(g(x))^2 = 2x - 3 + 4
(g(x))^2 = 2x + 1
g(x) = √2x+1
g(4) = √2(4)+1
g(4) = √9
g(4) = 3

(fog)(x) = 2x - 3
(g(x))² - 4 = 2x - 3
g(x) ² = 2x + 1
g(x) = akar(2x+1)
g(4) = akar(2(4)+1)
g(4) =akar 9
g(4) = 3