Tentukan soal matematika diatas!!

Bab Fungsi Komposisi

a) f(x) - x² = 0
f(x) = x²

(f ○ g)(x) = f(g(x))
(2x - 1)² = (g(x))²
g(x) = 2x - 1

b) g(2)
= 2(2) - 1
= 4 - 1
= 3

c) (g ○ f)(x)
= g(f(x))
= 2(x²) - 1
= 2x² - 1