Jika f(x) = √x + 1 dan (fog)(x) = 3√x-1 maka g(x)

fog(x) = 3√x-1
√g(x) + 1 = 3 √x - 1
kuadrat kan kedua ruas
g(x) + 1 = 3²(x - 1)
g(x) + 1 = 9(x - 1)
g(x) = 9x - 9 - 1
g(x) = 9x - 10