jika f(x)=√x+1 dan (fog) (x)=2√x-1 maka g (x)=...

Bab Fungsi

(f o g)(x) = f(g(x))
2√x - 1 = √(g(x)) + 1
2√x - 1 - 1 = √(g(x))
g(x) = (2√x - 2)²
g(x) = (4x - 4√x - 4√x + 4)
g(x) = 4x - 8√x + 4