Respostas

2013-10-11T13:06:21-03:00
F(x)= 1.(3-x)-(2+x).1/(3-x)^2 = 3-x-2-x/(3-x)^2= 1-2x/ (x-3)^2

a derivada da f(x)= 1-2x/(3-x)^2