ĐỀ ÔN 1 I. PHẦN CHUNG Câu 1    x y x + = −  C    !"!# y x m= + $%&&&'(&)*+,!& -*,#&)./!   0&-1!23 Câu 24&&)'5!67  8   9 1! 1! 9: 8 1!  8 ; 9: 8 xy y x x x xy x x y  + = −    + + = +  4&&'5!67   9       8  &< c x x x x − + + =  Câu 3=..'(>    &<?< dx I π π = + ∫ =7'5!67>!&) 9 : ; 9 : ; : x m x x x x + + + − + + − − = Câu 4a7'!&@*,+6! ( ) SA ABC⊥ +@A*,1!&>B!(C+ !&D!!&E&F'"!@,*,/! α =..G&'@*,H α =7 α  .%!&610I b=6!F'"!23-<J+ !6K ( ) ( )   9  Lx y− + − = MN''5!67 !"!# &O>!23$%&&&*+,*,A8 Câu 5 PQ#5!<+J+RST 9x y z+ + = =U V !&6SIW&>X  ( ) ( ) ( )    x y z y z x z x y P yz zx xy + + + = + + II. PHẦN TỰ CHỌN 1.Theo chương trình chuẩn.Câu VI a9Y=6!F'"!0&)23-<J+&Z9[& ! "!# 9 <\JA]+#  <^JA]=7&*6_-<+,6_# 9 6_#  !&*,>B! (%&*! &,&<X!0&>O>&Z Y=6!GB!!&0&)23-<JR+ !"!#  9 9 9  + = − = zyx &F'"! ]+]` =++−=+−+ zyxzyx βα MN''5!67Fa>@(6_#&b'<c0&&F '"!T Câu VI a.4&&'5!67>6!N''X ]9]8`  =−−+−+ iziziz 2. Theo chương trình nâng cao Câu VI b9Y!&*,(%&'5!67%*,1<?J^99A]+'5!67% *<^`J?98A]%,&O>&d[?eTJ&b'5!67%, Y=6!GB!!&0&)23-<JR+& !"!# 9       = = −= tz y tx   #   9 9 9  zyx = − = − f&b'5!67 !"!#!!0&-R$# 9 #   Câu VII b9&4&&)'5!67    =+−+ =− 91!1!    yxyx yx ĐÁP ÁN ĐỀ THI THỬ ĐH LẦN MÔN TOÁN LỚP 12 NĂM HỌC 2008-2009 Câu Hướng dẫn Điểm Câu Hướng dẫn Điểm Câu 1a Câu 1b ^=ghAi ^=.jJk+MG!5&)>+ &Q6+&)N ^,,= ^g ^l=3!&& 2 ( 4) 2 3 0x m x m+ − − − = m& !&)l= ⇔ 2 28 0m m R + > ⇔ ∈ ^42&*< 9 [< 9 ^+,<  [<  ^+0& < 9 +<  1!&)l=m ^ 2 1 ( ; ). . 28 2 2 OAB m S d O d AB m = = + ]` ]` ]` ]` ]` ]` Câu 4a Câu 4b :\<Al=!&) ⇔ 19 28m< ≤  ^M 77 100m ≤ ≤ F 19 28m < ≤ ^ f7c! ^ 3 2 1 V= . sin .(1 sin ) 3 3 ABC a SA S α α = − ^PY  2 .(1 )y t t = −  >J6f <  A 2 2 G& 0 45 α = ^g !6KZ9[+iA g !"! ( )∆ a7JAG< ]` ]` ]` ]` ]` Câu 2a Câu 2b Câu 3a Câu 3b ^ 2 2 3 . 28 2 3 2 OAB m S m = ⇔ + = 208 14m ⇔ = ± − ^g > > ≠ ≠ 0, 0, 1, 1x y xy y ^=nl=9<JA8 ^=b<  \8<^9A] 2 3x⇔ = ± ^Me)!&)1 4 4 2 3; ; 2 3; 2 3 2 3     + −  ÷  ÷ + −     ^g&8< ≠ ] ^l= 3 cot 4 4 cot 4 3 0x x⇔ − − = cot 4 1 1 13 cot 4 2 x x =   ⇔ ±  =   ^4&&c!2!&) ^Mb1>Nc! ^ π π π π   +  ÷   =   +  ÷   ∫ 2 3 1 2 6 8 cos 2 6 x d I x ^ = − 3 4 I ^g ≥ 8x ^l= + ⇔ − + + − − = 8 3 8 3 6 x m x x ^ob> 17x ≥ +l=6p 12 8x x m+ − = l=!&) 17x ≥  ⇔ 77 100m≤ ≤  ^ob> 8 17x ≤ < +l=6p ]` ]` ]` ]` ]` ]` ]` ]` ]` ]` ]`^]+` ]` ]` ]` Câu 5a Câu 5b ^q,= ⇔ ( , ) 5d I ∆ = 2 2 1 5 2 1 k k k − ⇔ = ⇔ = − + ^ (3; 1;2), (1;3; 1) P d n u= − = − uur uur  4&&W#l1& *9`[;[?L ^g !"!#ka7O>* N , ( 4;5;10) P d n u   = −   uur uur 1f=l ( ') :d⇒  15 28 9 4 5 10 x y z − − + = = − ^= ( ) ( )    9 9 8 +   = + + ≥  ÷ + +   x y z x x y z yz y z y z y z h 2 2 2 4 x y z P y z z x x y   ≥ + +  ÷ + + +   ^*r'#s!,g=,@ 2 ( )x y z+ + = 2 . . . x y z y z z x x y y z z x x y   + + + + +  ÷  ÷ + + +   2 2 2 (2 2 2 ) x y z x y z y z z x x y   ≤ + + + +  ÷ + + +    2 2 2 1 2 2 x y z x y z y z z x x y + + ⇒ + + ≥ = + + + =n 2P ≥ hI>tAu<J6G& 1 3 x y z= = = KL&PA+G& 1 3 x y z= = = Hết ]v` ]` ]` ]` ]` ]` . b9&4&&)'5!67    =+−+ =− 91!1!    yxyx yx ĐÁP ÁN ĐỀ THI THỬ ĐH LẦN MÔN TOÁN LỚP 12 NĂM HỌC 2008-2009 Câu Hướng dẫn Điểm Câu Hướng dẫn. ĐỀ ÔN 1 I. PHẦN CHUNG Câu 1    x y x + = −  C 