diketahui fungsi f(x)=2x-2 dan g(x)=X2-1 maka (fog)(x+1)?

jawab

f(x) = 2x - 2
g(x)= x² - 1

(fog)(x)= f {g(x)}
= f(x² -1)
= 2(x² -1)
f0g(x) = 2x² - 2

fog(x+1) = 2(x +1)² - 2
= 2 (x² +2x +1) - 2
= 2x² + 4x + 2 -2
= 2x² + 4x