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  • ĐỀ KHẢO SÁT CHẤT LƯỢNG MÔN TOÁN

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    Hoang Thi Bich Ngoc
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    11 views2 pages

    ĐỀ KHẢO SÁT CHẤT LƯỢNG MÔN TOÁN

    Uploaded by

    Hoang Thi Bich Ngoc

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Flag for inappropriate content
    of 2

    KHO ST CHT LNG MN TON LP 11

    Thi gian lm bi 180 pht (khng k thi gian pht )


    Cu I ( 2 im)
    Gii cc phng trnh sau:
    1.

    sin 2 x + sin 4 x = sin 6 x

    2.

    ( 1 t anx ) ( 1 + sin 2 x ) = 1 + t anx


    1
    3

    = 4cos x +
    sinx cosx
    3

    3.

    Cu II (1 im)
    1. Tnh gii hn: lim
    x1

    2. Cho hm s y =

    x+3 3 x+7
    x2 1

    1 2x
    , vit phng trnh tip tuyn ca th hm s bit tip tuyn i qua
    x +1

    im A(0; -2).
    Cu III ( 3 im)
    1. Gii bt phng trnh:

    1 2
    6
    A2 x Ax2 Cx3 + 10 .
    2
    x

    0
    1
    2
    n
    2. Tnh tng: S = ( n + 1) Cn + nCn + ( n 1) Cn + ... + Cn .

    3. T cc ch s { 1; 2; 3; 4; 5; 6 } lp cc s c 4 ch s khc nhau, ly ngu nhin mt s


    trong cc s va lp c. Tnh xc sut s ly c l s chia ht cho 5.
    n

    4. Khai trin biu thc 1 + x 4 + 2 thnh a thc, tm h s ca s hng cha x 6 bit n tha
    x

    3
    2
    mn h thc: Cn1 Cn1

    2 2
    An2
    3

    Cu IV (4 im)
    Cho hnh chp S.ABCD c y ABCD l hnh vung tm O, cnh bng a, SA = a 3 v
    SA ( ABCD ) .
    1. Chng minh: ( SBC ) ( SAB )
    2. Mi im M thuc mt phng (SAC) u tha mn: MB = MD.
    3. Tnh khong cch t im A n mt phng (SBC)
    4. Dng v tnh di on vung gc chung ca hai hai ng thng SO v BC.
    ....... HT .......
    H v tn th sinh: ........................................................................................

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