lab 11

1.
http://ss9626260.blogspot.com/2011/03/homework-3.html?showComment=1300101278157#c1701543189074870230
2.
http://s9726223.blogspot.com/2011/03/hw3.html?showComment=1300101486414#c2298815566973596689
3.
http://s9726351.blogspot.com/2011/03/homework-3.html?showComment=1300101611971#c6052906493187978207
4.
http://9626232.blogspot.com/2011/03/homework-3.html?showComment=1300102097530#c3784853388074712719
5.
http://s9626113.blogspot.com/2011/03/homework3.html?showComment=1300102256129#c2615635872071315197