Thi Thử ngày 6/3/2011

 TRƯỜNG THPT LÊ VĂN THNH Đ KIM TRA CHT LƯNG LP 12 NĂM HỌC 2010- 2011 Môn: TOÁN ;Kh&i A Thời gian làm bài: 180 phút,không k thời gian pht đê I. PHẦN CHUNG CHO TT CẢ CÁC THÍ SINH(7,0điểm) Câu I(2,0 điểm)  x m y x m + = −   !"#$%&$'&(()*+,-.$/ 0*1*23&45&4678/9:;*+,-<$$*$1=>&#$?@@/   Câu II (2,0 điểm)  $!$=2A&4B0& ( ) C      $&  D  x x x x− + + − = . $!$?=2A&4B0& ( ) ( ) ( ) C       C  EF D  G H  x x y x x y x y x x  − + = −    − + = +   Câu III (1,0 điểm) I&  C C   D D $&    G$& x I x x dx dx x x π = + + + ∫ ∫  Câu IV(1,0 điểm)0&J=@J*"8@0&&4>&<&#'&@//@/ C /4J@/FD D $%K=5&4@(LM&44J(N$K=5&4@4J4$OK=5&4 @(N$K=5&4@#P&4GQ D I&6$?&I0&&4@(1I.$J=@ Câu V(1,0 điểm) #"62A&4R&4$&BP&47  ( ) ( ) ( ) ( ) ( ) ( )             H    a b c b c a c a b a b c b c a c a b + + + + + + + + ≤ + + + + + + PHẦN RIÊNG(3 điểm) Thí sinh chỉ chọn một trong hai phần (phần A hoặc phần B) A. Theo chương trình chuẩn Câu VI.a (2,0 điểm)  B&4K=5&4S*TOxy0&O&U@J=2A&4B0&*23&45&4@79:8V/D*$1 VCWLT IB ID= − uur uur 0S*T@#$%*$1J&*T62A&4(@/@  B&4.M&44$&S*TX98YU==2A&4B0&KZLJ>LTK=5&4[79:C8VY:/D (4$-K=5&4\79V8VY:F/D(N$KZL*23&4B]&J>VWWC(#"&.I& Hr =  Câu VII.a (1,0 điểm) 0=RY^_& ( ) ( )  z z i− + (  Qz − =  B. Theo chương trình nâng cao Câu VI.b (2,0 điểm) B&4K=5&4<*TX98$*23&45&4  7 C Dd x y− = (  7 Dd x = `U==2A&4B0&*23&4 B]&#$%$%=9a(N$6  <$@(;6  <$$*$1 ABC ∆ (LM&4<$@(JL($ #P&4 C C+  B&4.M&44$&S*TX98Y$*23&45&4     7    x y z d − − − = = (  C   7  C  x y z d − − − = =  `U==2A&4B0&*23&45&46(LM&44J(N$K=5&4\79V8VY:/D*+&43$6;!6  (6   Câu VII.b (1,0 điểm $!$?=2A&4B0& ( )    G 4 4 C  F x y x y R x y + =  ∈  + =  bbbbbbbHếtbbbbbbb Thí sinh không được sử dụng tài liệu. Cán bộ coi thi không giải thích gì thêm S('&I$&W#"6& ĐÁP ÁN MÔN TOÁN Đ KIM TRA CHT LƯNG LP 12 NĂM HỌC 2010 – 2011 Câu ý Nội dung $1 I 1 c7/defg  $ W x y − → = −∞   $ x y + → = +∞  ⇒ 9/$?U&*R&4 W$ = −∞→ y x  $ = +∞→x y  ⇒ 8/$?U&&4&4 DQ 8h/  C DW    x x − < ∀ ≠ − ⇒ &4,#$%&B'&".!&4 ( ) W−∞ ( ( ) W+∞ W .M&4*<B, DQ `U=*a&4*Z8*- DQ i)*+, DQ 2 \2A&4B0&&*T4$*$1-6(7  ( ) ( )     D     x m x m x m x x m x m  − + − = +  = + ⇔  − ≠    DQ 6;<$$*$1=>&#$? ⇔ J$&4$?=>&#$?  ⇔ J$&4$?=>&#$?9  W9  ."  ( ) ( ) ( ) { } ( )     H D W Q  F Q  FW e D j  D m m m m m m m  + + >  ⇔ ⇔ ∈ −∞ − − ∪ − − +∞  − − − ≠   DQ $*J ( ) ( ) ( ) ( )             W  W W    GA x x B x x AB x x x x x x   + + ⇒ = − = + −   k?R($k ( )   D AB m m⇒ = + + *J ( )  D  D   D  m L AB m m m TM = ⇒ = ⇔ + + = ⇔  = −  DQ DQ II 1  7 ( )   j   x ≥ =*_ ( ) ( ) C         $&  D  x x x x  =  ⇔  + + − =   W ( ) ( )    G W G C C x k x k k Z π π π π ⇔ = + = − + ∈ DQ  ( ) ( ) ( ) ( )      $&  D  $& $&  $&   D x x x x x x x x ⇔ + + − = ⇔ − + + − = DQ $!$*2l ( )  W   x k x k k Z π π π = + = ∈ DQ %l=(N$*$mL.$?&jJ=2A&4B0&*_J&4$? ( )   G W G W G W G C C  x k x k x k x k k Z π π π π π π π = + = − + = + = ∈ DQ $mL.$?&7  x y≥ DQ 2 \ ⇔ ( ) ( ) C  C   Dx x y x x y− + − − = ⇔ ( ) ( ) ( )      Dx x x y x y x x y   − − + − − − =    ( ) ( ) ( )        Dx x y x x x y x y x x y y x x   ⇔ − − + − + − =     ⇔ = − ⇔ = − DQ $*J= ( ) ( ) ( )  C  C nF D  G H  H  H  C  H  G H   C x x x x x x x x x ⇒ − + = + + + + ⇔ − + = + DQ o6p&4M$Cbb0*2l&4$?6L8&q-=2A&4B0&  H x =  DQ III cr  C   D I x x dx= + ∫ K  x u+ = b ( )      I u u du⇒ = − ∫  Q C     Q C Q u u   + = − =  ÷   DQ DQ cr C C     D D $& $&    G$&   G$& x x x I dx dx x x x x π π = = + + ∫ ∫ K   G$& x u+ = bbbbI&*2l   E C Q &   Q I + = DQ IV I&*2l  C C G ABCD S a= DQ s SH AD⊥ ( ) ( ) ( ) ( ) ( )  SH AD H AD SAD ABCD AD SH ABCD SAD ABCD  ⊥ ∈  ⇒ ∩ = ⇒ ⊥   ⊥  s ( ) ( ) HK AB K AB SHK AB SK AB⊥ ∈ ⇒ ⊥ ⇒ ⊥ · D  GQSKH⇒ ⇒ = DQ K/9 D  W $& FD C HK x HK x AH⇒ = = = cr4$"(LM&4@J7       G C C C E x a SA AH SK a x x= + ⇔ = + ⇔ = DQ $*J7 C     C D S ABCD ABCD a V SH S= = DQ K  W a b c x y z a b c a b c a b c = = = + + + + + + .$*JJx+y+z=1(98Y62A&4 ( ) ( ) ( ) ( ) ( ) ( )                x y z y z x z x y P x y z y z x z z y + + + + + + ⇒ = + + + + + + + + DQ V VI.a 1             C   C   C   x x y y z z P x x y y z z + + + + + + ⇒ = + + − + − + − + J     G G C   C x x x x x + + ≤ + − +  ( ) ( ) ( )   C   C    Gx x x x x⇔ + + ≤ − + +  ( ) ( )   C  G  Dx x⇔ ⇔ − + ≥ `LM&*a&4(N$S$962A&4 *J ( ) G G HP x y z≤ + + + = qL#P&49!8B.$/#/ DQ DQ J ( ) ( ) W Q Q @/@ I AD d ID Do= ⇒ = ( ) ( ) ( )   7 C  QD C x y⇒ ∈ + + − = DQ *JS*T&4$?-?7 ( ) ( )   W  C  Q CW E   D x y x y x y x y  = = −  + + − =  ⇔   = − = + − =      ( ) W D⇒ − i0J&6T62A&4 DQ ( )  WHIB ID B= − ⇒ − uur uur \2A&4B0&@79V8:E/DW@VQW DQ ( ) QW GAB DC D= ⇒ − − uuur uuur DQ 2 $!oKZLJ>#"&.I&d \2A&4B0&7   C x t y t z t = − +   = −   = −  i0*$tL((LM&44J(N$\ DQ *J ( ) I IH Q= ∩ ⇒ S*TDWW DQ    C FEIH R r IH= ⇒ = + = \2A&4B0&KL7 ( ) ( )      FEx y z+ − + − = DQ VII.a KY/:#$# ( ) ( ) ( )       z z i a b a b a b i− + = + − − + + −  ( )   D a b⇒ + − = DQ 7 ( ) ( )    Q  Q z a b− = ⇔ − + = DQ u(JW#/DWWWV DQ iU8Y/$WY/V$ DQ VI.b 1 $!oJ>(#"&.I&d J6  (6  4$&L<$X(4J@X/CD D DQ  ( ) ( ) C C C C C C  ABC C AB BC CA R R R ∆ = + + = + ⇒ + = + ⇒ = DQ X/d/ ( ) ( ) WD W WDI I⇒ − DQ ⇒ =2A&4B0&*23&4B]&77 ( )    x y− + = W ( )    x y+ + = DQ $!o   Wd d A d d B∩ = ∩ = ( ) ( ) ( )  W  W W C W C W  W C  WA a a a B b b b AB b a b a b a+ + + + + + ⇒ + − + − + − uuur DQ 6(LM&44J(N$\ WAB n⇔ uuur r v&4=2A&4 AB k n⇔ = uuur r DQ 2  Q  C    GWQWC  DQ b a k a b a k b B b a k k + − = =     ⇔ + − = − ⇔ = ⇒     + − = − =   VËy ph¬ng tr×nh d: G Q C    x y z− − − = = − −  DQ VII. b .79wDW8wD ?=2A&4B0&     G  G 4 C H F F xy xy x y x y   = =   ⇔ ⇔   + = + =     DQ $!$=*2l     x y  =  ⇔  =   DQ . y R x y + =  ∈  + =  bbbbbbbHếtbbbbbbb Thí sinh không được sử dụng tài liệu. Cán bộ coi thi không giải thích gì thêm S('&I$&W#"6& ĐÁP