Resposta :
Resposta:
f(x) = 1 - 2x
g(x) = 2x + k
f(g(x)) = 1 - 2*(2x + k) = 1 - 4x - 2k
g(f(x)) = 2*(1 - 2x) + k = 2 - 4x + k
-4x + 1 - 2k = -4x + 2 + k
1 - 2k = 2 + k
1 - 2 = 3k
k = -1/3
Resposta:
f(x) = 1 - 2x
g(x) = 2x + k
f(g(x)) = 1 - 2*(2x + k) = 1 - 4x - 2k
g(f(x)) = 2*(1 - 2x) + k = 2 - 4x + k
-4x + 1 - 2k = -4x + 2 + k
1 - 2k = 2 + k
1 - 2 = 3k
k = -1/3