Question

Jika (fog)(x)=x2-2x-2 dan f(x)=x-3 maka nilai g(2)

Answer 1

(f o g)(x) = x² - 2x - 2
maka

f(g(x)) = x² - 2x - 2
⇒ g(x) - 3 = x² - 2x - 2
⇒ g(x) = x² - 2x + 1
⇒ g(x) = (x - 1)²


Jadi,

g(2) = (2 - 1)²
       = 1²
       = 1


Terimakasih semoga membantu

Answer 2

(f o g)(x) = x² - 2x - 2
g(x) - 3 = x² - 2x - 2
g(x) = x² - 2x + 1
g(2) = 2² - 2(2) + 1
       = 1