Respostas

2014-05-22T17:15:49-03:00
Lim    x^3-27
x-3    x^2-6x+9

lim   x^3-27       = 00 positivo
x-3   x^2-6x+9

lim   x^3-27       = 00 negativo
x-3   x^2-6x+9