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R  @?u?FAB C   =   uuur uuur ^ @? ? AC = − uuur ? R C @AB C AC   ⇒ = − ≠   uuur uuur uuur ⇒ IJ*R!e2&6 DXIJ?R C ;@A @;F @?;F @?;F @?;F L6, -.$/$0d23*6K233"!!623 DY ∆ k0d23*6K233"!!623 D  @?u?F R AB u C ∆ ∆ ⊥  ⇒ =  ∆ ⊥  uur D/ α ![& ∆ *IJ2<22j2 ABv u ∆ uuur uur k!N/-   ?  C? @?wA   VTPTmp u AB u ptmp α α α ∆   ⇒ = = − −   ⇒ uur uuur uur  >DFEC\Du@ D/ β ![& ∆ *R2<22j2  Ru v C ∆ uur uuur k!N/-    R?  w? ;F?u   VTPTmp u C u ptmp β β β ∆   ⇒ = = −   ⇒ uur uuur uur  w>E;FDu\E ;A@ 'l/$0d23*6K233"!!623k >DF_C\ u @ w> ;F u\ ;A @y + =  ∆  − + − =  @?;F @?;F @?;F @?;F @?;F C . TRƯỜNG THPT NGUYN ĐNG GV : PHM HNG TIN ĐỀ THAM KHẢO ÔN THI TỐT NGHIỆP THPT 2010 SỐ 3 MÔN TÓAN Thời gian làm bài: 150 phút   . ?A?;?F?@?C?RC?@?A &[2320d23$]23IJ*R!e2&6P2XIJ?R ,-.$/0123$4520d23*6K233"!!6233M&;0d23$]23IJ*R ____________________________________________f___________________________________________________ ĐP N: ĐỀ SỐ 3 W2!623 JS  L6& ; 5$> { } g D = −¡ @;F G,.2$<2 DP2h23 ; ; i