Pertanyaan :
Jawaban :
Misal f(3) = p
f(3) = x – 3
p = x-3
x = p+3
f(3) = x – 3
p = x-3
x = p+3
f(3) = x-3
f(p) = p+3-3
f(p) = p
f(x) = x
fog (x) = f(g(x))
x^2 -2x-2 = g(x)
g(2) = 2^2 -2.2-2
g(2) = -2