hhh

vay thi cuoi cung co cai tu dien toan nao cac bac post len di dich tung tu nhu LAC VIET la duoc roi

bac co biet cuon nao tren mang ko TA cung duoc ma em chi can
cuon cang so cap cang chi tiet cang tot em moi hoc nen thay kho hieu wa

xin loi cac bac vi cai bai kem chat luong nay

mong cac bac quan tam toi bai sau nhe

cho X la khong gian metric day.f:X vao R;goi G la tap cac diem lien tuc cua anh xa f. gia su G tru mat trong X.chung minh G la khong dem duoc .

chan nhi khong ai quan tam

truoc het em xin rut kinh nghiem ve viec chu viet
nhung hinh nhu bai nay sai de . vi dien tich co ve co the lon vo cung