ĐỀ THI HSG HUYỆN BÌNH XUYÊN - VĨNH PHÚC - NĂM HỌC 2008-2009

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ĐỀ THI HSG HUYỆN BÌNH XUYÊN - VĨNH PHÚC - NĂM HỌC 2008-2009

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Đ THI HSG HUYN BNH XUYÊN - VNH PHC - NĂM HC 2008-2009 Bi 1                − − = − − + Bi 2!"#$%&'()*+( *  ,*  (*,(,- Bi 3.$&/0"'   1 *  * * *   * − + + + + = + − Bi 423456/789':;<= · ;4 = α >?@  .ABCDED/FD=G HI2;3<=;4.AJ.<=KDED/FD=AHI2;33;<=2;4 3L2B94C:M  J.NN2<= J. 2 JK 34 =  MC2>  OKJ. OBMC Bi 5P/06Q'R               + + ≥ + + + HƯ%NG D'N GI(I Bi 1                − − = − − + .$ !S⇔  ⇔    T !5   1 1 1 1                                                                                               − − − − − + − − − − = = = = − − − − − − + − + + − − + − + − − − − − − = = = = − + + − + − + + + +  Bi 2!"#$%&'()*+( *  T*  (*T(T- .$ !5 ⇔(*   *  *T-⇔      * * - * * * - * - ( * *  *  *  + − + + − − = = = + + + + U"(∈V)*T-*  ⇔*T- *- *  ⇔*  T-*  ⇔*  TW*   ⇔W*   U"*∈V<=*  X)W*   ⇔         *  *   *  *  *  *  @ *  * - * - *  W * - * - =    + = =     = = −  + = ⇔ = ⇔ ⇔     = =     + = =    = −  !(<=&/0" UY*Z UY*T⇒(T UY*-⇒(- UY*T-Z U[(*+( ∈\T+T +-+- ] Bi 3.$&/0"'   1 *  * * *   * − + + + + = + − .$6Q'R*X   1        *  * * *   *  *  *  *  *  *  *     *   *  *   *     *    *  *    *    *   *  *  *  ** *   * * *    − + + + + = + − ⇔ − + + + − + − + − = ⇔ − − − + + − − = ⇔ − − + + − =  − − = − = =   ⇔ ⇔ ⇔ ⇔ =    = + + =   + + + − =   U[(&/0"65^RP'(#D=* Bi 423456/789':;<= · ;4 = α >?@  .ABCDED/FD=G HI2;3<=;4.AJ.<=KDED/FD=AHI2;33;<=2;4 3L2B94C:M  J.NN2<= J. 2 JK 34 =  MC2>  OKJ. OBMC .$  O3_`5 3J 3.  3_ 3`  = = ⇒J.NN26aDb!Dc6$ !SJ.NN_`⇒ J. J.  J.   _`  2  2  = = ⇒ = !/0G<Y2de JK  34  = '( J. JK J. 2 2 34 JK 34 = ⇒ =  !5 · · 2M4 ;4= = α 5A5:/0<'Z5 .AfD=6gIMC<=2!5 · · MC 2M4= = α Dc !5MCMffC2f>f>2ff >2>  /0G&E 5MB34> !S65'( MC 2 MB 34 = %c&E  J. 2 JK 34 = '( MC J. MB JK = f:5 · · .JK ;4= >5A5%&:/0 465 · · BMC .JK= = α U[(OK.J OBMC Bi 5P/06Q'R               + + ≥ + + + .$ !5                  = − ≥ − = − + + h&Pi#6j*  (  X*( !/0G              = − ≥ − + + <=              = − ≥ − + + 465                    + + + + ≥ + + − + + + _%  X ⇔X⇔T XT U[(                  + + ≥ − = + + + 4#'kl*$(⇔ α α α α f M K J . C B e ` _ d ; 2 4 3  . Đ THI HSG HUYN BNH XUYÊN - VNH PHC - NĂM HC 200 8-2 009 Bi 1 . *  T*  (*T(T -  .$ !5 ⇔(*   *  *T - ⇔      * * - * * * - * - ( * *  *  *  + − + + − − = = = + + + + U"(∈V)*T - *  ⇔*T - * - *  ⇔*  T - *  ⇔*  TW*   ⇔W*   U"*∈V<=*  X)W*   ⇔ . *  ⇔*  T - *  ⇔*  TW*   ⇔W*   U"*∈V<=*  X)W*   ⇔         *  *   *  *  *  *  @ *  * - * - *  W * - * - =  

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