Scribd Logo
Upload

Welcome to Scribd!

  • ĐỀ KHẢO SÁT CHẤT LƯỢNG LỚP 12

    Uploaded by

    ngonguyenanhvu
    13 views1 page

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    DOC, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    Report this Document

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Flag for inappropriate content
    13 views1 page

    ĐỀ KHẢO SÁT CHẤT LƯỢNG LỚP 12

    Uploaded by

    ngonguyenanhvu

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Flag for inappropriate content
    of 1

    KHO ST CHT LNG LP 12, LN 1 - NM 2012

    Mn: TON
    Thi gian lm bi: 180 pht
    PHN CHUNG CHO TT C TH SINH (7,0 im)
    Cu I. (2,0 im) Cho hm s y = x 4 2mx 2 + 2m
    1. Kho st hm s khi m = 1
    2. Tm m hm s c 3 cc tr, 3 cc tr ny cng vi gc ta to thnh 1 t gic ni tip trong
    mt ng trn

    ) cos( x + ) cos 2 (2 x + ) + 2 2 = 0
    4
    4
    4
    3
    ( x + 2) x + 1 = 8 y + 2 y

    2.Gii h phng trnh


    x + 1 + y 1 = 2

    Cu II. (2,0 im) 1.Gii phng trnh 4 sin 3 x sin x + 4 cos(3 x

    Cu III. (1,0 im) Tnh tch phn:

    sin 4 x

    (1 + cos x)(1 sin x) dx


    0

    Cu IV. (1,0 im) Cho hnh chp S.ABCD y l hnh thoi, AC = 2 3a , BD = 2a ,AC ct BD ti O.

    (SAC) v (SBD) vung gc vi (ABCD).Bit khong cch t C n mt phng (SAB) l

    a 3
    Tnh th
    2

    tch S.ABCD v khong cch gia hai ng thng SC v BD.


    Cu V. (1,0 im) Tm m phng trnh sau c hai nghim phn bit dng

    x+

    11
    7

    + 4 1 + 2 =m
    2x
    x

    PHN RING (3,0 im) Th sinh ch c lm mt trong hai phn (phn a hoc b)
    a. Theo chng trnh Chun
    Cu VIa. (2,0 im)
    2
    2
    2
    2
    1. Trong mt phng Oxy cho ng trn (C ) x + y = 25 v ng trn (T): x + ( y 8) = 9 . Mt ng
    thng (d) ct (C) ti A v B; ct (T) ti C v D tho mn AB=BC=CD. Vit phng trnh ng thng (d).
    2. Trong khng gian Oxyz, cho mt phng (P): x y + z + 3 = 0 ,ng thng : ( ) :

    x 3 y z +1
    = =
    v im
    1
    2
    1

    A(1,2,3) Vit ng thng d i qua A ,song song vi (P) v to vi () mt gc nh nht


    Cu VIIa. (1,0 im):Gii phng trnh sau trn tp s phc: ( z 1) 2 ( z + 1) 2 + 9 z 2 = 0

    b. Theo chng trnh Nng cao


    Cu VIb. (2,0 im)
    1. Cho im A(11,3), B (9,7) .Lp ng thng song song vi AB,ct ng trn ng knh AB ti C,D sao
    cho C,D v hnh chiu ca chng ln ng thng AB l 4 nh mt hnh vung.
    2. Cho im M(1,-1,0);A(1,1,0) v mt phng ( ) : 3 x + y + 2 = 0 .Vit phng trnh ng thng i qua
    A,song song vi ( ) v khong cch t M n bng khong cch t n ( )
    Cu VIIb. (1,0 im) Tm s phc z bit 2( z + 1) + z 1 = (1 i ) z

    --------------------------------- Ht ------------------------------Ghi ch : K kho st cht lng ln 1 s c t chc vo ngy 28/5/2012.

    You might also like