Respostas

2013-11-25T14:54:32-02:00
F(g(x)) = f(x-2) = 3.(x-2)+1 = 3x-6+1 = 3x-5
g(f(x)) = g(3x+1) = 3x+1-2 = 3x-1

f(g(5)) = 3.5-5 = 15-5 = 10
f(g(x)) = 3x-5
g(f(-2)) = 3.(-2)-1 = -6-1 = -7
g(f(x)) = 3x-1