... = - + - - + - + - - ( 1)mtkhỏc ( ) ( ) ( ) ( ) ( )1005 2011 2 10051005 10051 1 1 2 1 2 2i i i i i i ộ ự + = + + = + = - + ở ỷ (2 )T(1)v(2)tac:1 3 5 7 2009 2011 1005 2011 2011 2011 2011 ... ^ = - = ị uuuuur uuuuur r r ( ) ( ) ( )16 2 2 .4 2. 5 7 0 1 1 40 s s s s N + - + - - = ị = - ị - - Ã ( ) ( )2 20 130 6 44 3 5 5t M M N s s s = ị ị = + - - - uuuuur ( )2 2 2/ /( ) 1 ... + + + +do 4 4 1 4 2 4 31, , 1, ,k k k ki i i i i i k + + + = = = - = - " ẻƠ doútacú1.000,25 ( ) ( ) ( ) 2011 0 2 4 2010 1 3 5 2011 2011 2011 2011 2011 2011 2011 2011 2011 1 i C...