In trang này | Đóng cửa sổ In từ: Trang web của Tạp chí Toán học và tuổi trẻ http://toantuoitre.nxbgd.com.vn GIẢI BÀI KÌ TRƯỚC GIẢI BÀI KÌ TRƯỚC Số :387 - 9/2009 In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 1 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 2 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 3 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 4 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 5 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 6 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 7 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 8 of 9 5/30/2010 10:56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 9 of 9 5/30/2010 10:56 P M . http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 1 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 2 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 3. http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 3 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 4 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 5. http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 5 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 6 of 9 5/30/2 010 10 :56 P M In trang http://www.nxbgd.vn/toanhoctuoitre/tapchi/pop_printer.asp?id=577 7