!"#$%&'()*+, 2 3 3 1 x x y x + + = + !"#$ 2 3 3 1 x x m x + + = + %#&!& !"#$%&'()*+, '!"#$( 2 2 2 2 1 9 2 3 3 x x x x − − − ≤ '!"#$( sin 2 cos 2 3sin cos 2 0x x x x+ + − − = !"#$-&'()*+, $#)!*#"&&+,- ./012345/1637!"#$"#$ 8 .459:;< 10 $#9##"&&+,-=>&!!"#.5?@. 5 ? @ "./0101034 5/101034@ /0113 3A& >>&!!"#.5?@. 5 ? @ 'B>$# 5??#$C#)!*#/.5 @ 3/.B5 3## 3?#$C#D9# E&"#*#.? /E.3") !*#/.5 @ 3/.B5 39#!&$: E !"#.$%&'()*+, ,::! 2 2 0 ( 2 1)cosI x xdx π = − #->""*#( 2 2 2 6 12 n n n n P A P A+ − = /F >! k n A >D"!&!9!3 !"#.$&'()*+ ?,4-4=>G"#,-=<?#$C#( 2 2 2 3 1 1 1 2 x y z y z x + + ≥ + + + ðỀ THI 119 http://esnips.com/web/chyputy . = /F >! k n A >D"!&!9!3 !"#.$&'()*+ ?,4-4=>G"#,-=<?#$C#( 2 2 2 3 1 1 1 2 x y z y z x + + ≥ + + + ðỀ THI 119 http://esnips.com/web/chyputy