Jika diketahui f (x+1)=2x dan (fog)(x+1)=2x^2+4x-2 ditanya g (x)

jawab

fungsi

f(x+1)= 2x
f(x) = 2(x -1)
f(x)= 2x - 2

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