扬州市学年高三数学第二次调研试题及答案

1、扬州市20072008学年度第一学期期末调研测试试题高三数学参考答案第一部分一、填空题1.1,2,42.1i5.246.19.1910.12-3.x2x244.77.2sin(2x)8.3411.2xy1012.13 .4二、解答题:14 .15 .解：本题的基本事件共有27个(如图).3分(1)记3个矩形都涂同一颜色”为事件A,由图可知，事件A的基本事件有1X3=3个，故31P(A)-6分279(2)记相邻2个矩形颜色不同”为事件B,由图可知，事件B的基本事件有3X2X2=12个，故124P(B).12分279答：3个矩形颜色都相同的概率为1,相邻2个矩形颜色不同的概率为-.14分99uuu

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3、e2e(x1)2exy3e、3IIf'(x)(x23x)exf'(1)0f'(x)x2(a2)x(a5)ex2ef(1)eg(x)x2(a2)x(a5)0，-0(a2)24(a5)0a>24a42<a4ay20g(0)(a5)0a22a4g(x)x2(a2)x(a5)0,2_x2x5a(x1)0,x22x5x1a0,)(x1)a0,(x1)2(y1)2M(0,1)lMPMQ(1,1)k2ykx2x2y(12k)x2_2(1k)x10P(x),y1)Q(x2,y2)xx?2(11k学x”211k2MPMQuuuuuuuMPMQ0(x1,y1b)(x2,y2b)

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5、12anSnSn1n1anan11、n,仁)bn2loganbnbn21nP1(27,n)Pn1(12n彳，n1)yn(n1)1x-212T:-0)Bn(0,n2)CnOAnOBn(n2)22n2(n2)22n2(n3)22n32(n2)2(n3)2bkk728373220081120888n9(x21)9T5x2n32n2n31一0CntC1dnbk11202008k8362963msm2008mC94x6126x6T6C5x3UULUUNB1(2,0,1)M(0,1,2)D(0,0,0)B(2,2,0)UULUcosn,NBuuuunNBUtUBT|n|NBJ、538327(1126x333152008332DD1xyzuuirDB(2,2,0)_5_3)296667C2U4cnB1(2,2,2)N(0,2,1)uuuirDM327(0,1,2)n(2,2,1),1,210P(X 4) C；(-)4 - a P(X 33 24310 分答：此同学直到第 4次测试完备后才被确定为二、5/15110c155)C5()EX45-5324324324327B级的概率是;入围的期望是.27274.解：（1）由(S11)2S2得:由（S21)2(S2Sl)S2得:S2由（S31)2(S3S2)S3得:S3122