http://dientuvietnam...cgi?x_1,...,x_n là các số thực dương có tổng bằng 1. CMR:
Bdt
Started By chuyentoan, 22-01-2005 - 15:53
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
0 members, 1 guests, 0 anonymous users