  !" # !$ ! %&Không chuyên' % ()*+Không kể thời gian giao đề  ,-. Đề thi có 01 trang, thí sinh không phải chép đề vào giấy thi /01điểm    −  ( )   − /0 1 điểm!"#$%&   '  (x x− + = ) /0!1 điểm!"#$%&  *  ' x y x y + =   − + =  ) /0# 1 điểm+,  ( )   y x= − + /01230#45)&060# 4507806 ( )  9 * ) /01 1 điểm:;012<    y x= − ) /02 1 điểm="0>&?@/53  A( )B8C8%= DE"C85A&5"0>F0G)C85E C8%="0>&?@0/) /0$ 1 điểm+,#$%& ( ) ( )    A H ( x x+ − − − = ) +I%JEKL%2&#$%& 38/M) !L x N  x 3<#$%& )&%2<06      '   x x x x x x     + + + =  ÷  ÷     /03  điểm+,0#%OP/0#FQRE+SE8/EK8N5M QT078%806U<P+N5MTSV+RWX)+I I+UXT=B0#Y=0#%O) UX-,-,QR) /041 điểm+,QR+E8WQNFZ0#,Q[[8=R+)S 0#%OMP0#FQR)+,B 0, · ( QR+ A(= E QR  =   ( > ,%#K) \,5]QR+J,0#%OP) [^ Giám thị không giải thích gì thêm. [LED-)))))))))))))))))))))))))))))))))))))))))))))))))_.,5)))))))))))))))))))))))))))))))))))))))) +? F`<2 )))))))))))))))))))))))))))))))))))))))))+?F`<2))))))))))))))))))))))))) 56 /01điểm      *)  *    − = − = − =  ( )    A a A  − = − = − = ) /0 1 điểm!"#$%&   '  (x x− + = ) ( )  ' *)) a (N ∆ = − − = > ∆ = '   ) x + = = 9  '  )  x − = = :@ _ b 9        /0!1 điểm!"#$%&  *  *  *   *  '  A ( H *   x y x y x y x x x y x y y y y + = + = + = + = =      ⇔ ⇔ ⇔ ⇔      − + = − + = = = =       :@#$%&/58> ( ) ( ) 9 9 x y = ) /0# 1 điểm ( ) ( ) 5    y x = − + 07806 ( )  9 * D/ ( ) *   ) = − +     * ⇔ − + =   *   ⇔ = + −    ⇔ = ) :@EK   = & ( ) ( ) 5    y x = − + 07806 ( )  9 * ) /01 1 điểm:;012<    y x= − ) R! x  − − (     y x= − *N'− − ( − *N'− /02 1 điểm !LC85"0>&?@3 x N Ax > ) _8%C8%="0>&?@3 A( x  +C8%=D/C8%=K3 A(  x + ) +C85"AD/C85K3 Ax − ) :&5F0GD/ ( ) A(  A A(x x   + − =  ÷   ( ) A(  A A(x x   + − =  ÷   cC8F Ax >  ( ) ( ) A(  A A(x x x⇒ + − =     A( (x x⇔ − − =  A (( (x x⇔ − − = ( ) ( )  d  ) (( (a (∆ = − − − = > N d (a ∆ = = )   Ax = + = @9   (x = − = − 3,W) ⇒ +C85 Ax = NC8%= A( A( ( Ax = =  :@C85"0>3ANC8%="0>3 () /0$ 1 điểm ( ) ( )    A H ( x x+ − − − = ) 7'+IEKL%2&#$%& 38/M) ( ) ( )    d  ) A H   A H  * ∆ = − − − − = − + + + = + + ( )   d  *    * (∆ = + + = + + > N ∀ ) :@#$%& 38/MEKL%2<) 8'\,: ( )     x x+ = − − = −  ) A Hx x = − −      '   x x x x x x     + + + =  ÷  ÷     ⇔       'x x x x+ + = ( )    'x x x x⇔ + + = ( )    A H '⇔ − − − =  *  * A H ' (⇔ − + − − − =  * *  (⇔ − − =   H a (⇔ − − = 5W ( ) ( )     H a (− + = − − + − =   a   = −   ⇔  =  :@  = − N a   = 3%2]&) /03  điểm ! PN    0#  F  QR  E  +SN QR +S ⊥  W  PN  5M  QT  78  UN UP b U+ N5MTSVR+WX ef +UXT=B0#Y)  UX QRP 7'+II+UXT=B0#Y=0#%O) S, QR +S ⊥ WPD/ » » » » ( -0Q+ -0+R -0RS -0SQ a(= = = = · » ( ( U+X -0RS a( *'   = = × = 9 · » ( ( UTX -0SQ a( *'   = = × = ) · · ( U+X UTX *'⇒ = = ) :@I+UXT=B0#Y=0#%O) 8'+IUX-,-,QR / · · T+X TUX= gV » TX <0#%O78+NUNXNT) fW/ · · T+X TQR= gV » TR <0#%OP) ⇒ · · TUX TQR= gJ · T+X   · · TUX TQR vaø hE2%01E2D UX QRP ) /041 điểm ! QR+∆ N  µ ( Q a(= N  Q[ R+⊥ N  ( ) [ R+∈ N QR P9 i b     ÷   N · ( QR+ A(= N QR = ef \,5]QR+ J,0#%OP) \,5]QR+J,0#%OPI _ toâ ñen ) S, · ( Q[R a(= D[8=0#%O ( ) P 0#FQR) PR[ ∆ 0C8E&MhP/ · ( PR[ A(=  · ( RP[ A(⇒ =  · ( QP[ (⇒ = ) QR+ ∆ / ( Q+ QR) R ) A(  = = = )  QR+   _ QR)Q+ )     ∆ = = × = 0E5)   PR[      _ * A ∆    ÷   = = 0E550C8W   )    7PQ[  ) ( i    _ A( A(  π π π    ÷   = = = 0E5) ( )      QR+ PR[ 7PQ[   *       _ _ _ _ (N'  A  * π π ∆ ∆ − = − − = − − = ≈ toâ ñen 0E5) 999:999 . thời gian giao đề  , - . Đề thi có 01 trang, thí sinh không phải chép đề vào giấy thi /01điểm  . QRP 7'+II+UXT=B0#Y=0#%O) S, QR +S ⊥ WPD/ » » » » ( -0 Q+ -0 +R -0 RS -0 SQ a(= = = = · » ( ( U+X -0 RS a( *'   = = × = 9 · » ( ( UTX -0 SQ a( *'   = = × = ) · · ( U+X UTX *'⇒. điểm+,0#%OP/0#FQRE+SE8/EK8N5M QT078%806U<P+N5MTSV+RWX)+I I+UXT=B0#Y=0#%O) UX -,  -, QR) /041 điểm+,QR+E8WQNFZ0#,Q[[8=R+)S 0#%OMP0#FQR)+,B