Ngày tải lên :
06/07/2013, 01:27
... ) y ˆ y · ABC » AB r y uuu r AB r y v y Ctrl+6,Alt+Right Ctrl+^,- AB Ma tran Ctrl+M,2 4 Ctrl+M,3 Ctrl+M,N Khai bao ma tran Dau ngoac Ctrl+9 Ctrl+[ Ctrl+T,[ Ctrl+{ Ctrl+T,} ( ) [ ] [ { } { Ctrl+T,| ... Ctrl+Alt+' Ctrl+" Ctrl+6,Alt+' Ctrl+6,Alt+Ctrl+6,X Ctrl+6,/ Ctrl+6,\ Ctrl+Alt+ Ctrl+6,2 Ctrl+6,3 Ctrl+6 ,4 Ctrl+shift+_ Ctrl+6,_ Ctrl+6,9 Ctrl+6,6 Ctrl+^,6 Ctrl+^,9 Ctrl+Alt+Ctrl+^,Right Ctrl+6,Left y′...