jika f(x) = 3x+2 g(x) = -x ditanya: f0g g0f f0f g0g

f(x) = 3x+2, g(x) =-x
(f o g)(x) = f (g(x)) = 3 (-x)+2 = -3x+2
(g o f)(x) = g(f(x)) = -(3x+2) = -3x-2
(f o f )(x) = f(f(x)) = 3(3x+2)+2 = 9x+6 +2 = 9x +8
(g o g)(x) = g(g(x)) = -(-x) = x

gampang banget (y)