Pertanyaan
jika g(x) = x + 3 dan (fog)(x) = x² - 4 maka f(x - 2) =
Ditanyakan oleh: USER3721
55 Dilihat
55 Jawaban
Jawaban (55)
(fog)(x) = x² - 4
f(g(x)) = x² - 4
f(x + 3) = x² - 4
f(x) = (x - 3)² - 4
= x² - 6x + 9 - 4
= x² - 6x + 5
f(x - 2) = (x - 2)² - 6(x - 2) + 5
= x² - 4x + 4 - 6x + 12 + 5
= x² - 10x + 21
f(g(x)) = x² - 4
f(x + 3) = x² - 4
f(x) = (x - 3)² - 4
= x² - 6x + 9 - 4
= x² - 6x + 5
f(x - 2) = (x - 2)² - 6(x - 2) + 5
= x² - 4x + 4 - 6x + 12 + 5
= x² - 10x + 21