Respostas

2014-04-08T21:31:47-03:00
-4, -2, - 1/4, -1/2, 0, 1/2, 1/4, 4 
            
2014-04-08T21:33:14-03:00
-4,-2,-1/2,-1/4,0,1/4 e 4
1 3 1
-4,-2,-1/2,-1/4,0,1/4,1/2, 2 e 4