heo ua… Hen chi cac cu ta hay noi: Van minh, vo nguoi. Cai cam giac tui than cu bam theo minh mai, cho den khi cai ong thai tu ben Anh Quoc cuoi vo. Mot co ban nhan xet: “Em thay qua that vong khi ong lay mot nguoi dan ba gia nua, xau xi nhu vay, trong...
Tính I = S z 2 dydz +xdzdx −zdxdy v i S là m t xung quanh, hư ng phía ngoài c a v t th gi i h n b i các m t z = 4 −y 2 , z = 0, x = 1, x = 0 b ng cách dùng công th c Ostrogratxki-Gauss. V m t cong (S), pháp véc tơ v i...
Not one thousand years later, one of yours Tap on my forehead crystal quatrains An echo from a local bomb Once demoted, the world is down and out The mother is too embarrassed to put Yelang So far a mystery is your hometown Longxi or Shandong, or Yecheng Qinglian Township broken It ...