Diketahui F (×)=×-3 g (×)=2×+5 h (×)=×2-2 ditanya:a. (Fo(goh))(×)

Kelas 10 Matematika
Bab Fungsi Komposisi

(goh) (x)
= g(x² - 2)
= 2 (x² - 2) + 5
= 2x² - 4 + 5
= 2x² + 1

(fo(gof)) (x)
= f(2x² + 1)
= (2x² + 1) - 3
= 2x² - 2

fogoh(x)=x²-2 ; 2(x²-2)+5=2x²-4+5=2x²+1 ; 2x²+1-3=2x²-2