2014年普通高等学校招生全国统一考试(全国新课标Ⅰ卷)数学试题(文科)解析版.pdf
2014年高招全国课标 1(文科数学 word 解析版)第卷一选择题:本大题共10 小题,每小题5 分,共 50 分.在每小题给出的四个选项中,只有一项是符合题目要求的。(1)已知集合13Mxx,21Nxx,则MN()A.)1,2(B.)1,1(C.)3,1(D.)3,2(【答案】:B【解析】:在数轴上表示出对应的集合,可得MN(-1,1),选B(2)若0tan,则A.0sinB.0cosC.02sinD.02cos【答案】:C【解析】:由tan0可得:kk2(k Z),故2k22 k(k Z),正确的结论只有 sin 20.选 C(3)设iiz11,则|zA.21B.22C.23D.2【答案】:B【解析】:11111222iziiii,22112222z,选 B(4)已知双曲线)0(13222ayax的离心率为2,则aA.2 B.26C.25D.1【答案】:D【解析】:由双曲线的离心率可得232aa,解得1a,选 D.(5)设函数)(),(xgxf的定义域为R,且)(xf是奇函数,)(xg是偶函数,则下列结论中正确的是A.)()(xgxf是偶函数B.)(|)(|xgxf是奇函数C.|)(|)(xgxf是奇函数D.|)()(|xgxf是奇函数【答案】:C【解析】:设()()()F xf x g x,则()()()Fxfx gx,()f x是奇函数,()g x是偶函数,()()()()Fxf x g xF x,()F x为奇函数,选C.(6)设FED,分别为ABC的三边ABCABC,的中点,则FCEBA.ADB.12ADC.12BCD.BC【答案】:A【解析】:EBFCECBCFBBCECFB=111222ABACABACAD,选 A.(7)在函数|2|cosxy,|cos|xy,)62cos(xy,)42tan(xy中,最小正周期为的所有函数为A.B.C.D.【答案】:A【解析】:由cosyx是偶函数可知cos2cos2yxx,最小正周期为,即正确;y|cos x|的最小正周期也是,即也正确;cos 26yx最小正周期为,即正确;tan(2)4yx的最小正周期为2T,即不正确.即正确答案为,选A8.如图,网格纸的各小格都是正方形,粗实线画出的事一个几何体的三视图,则这个几何体是()文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10文档编码:CE8W9H2P7C6 HG2M8K8W4Z1 ZS4K6M2G5U10A.三棱锥B.三棱柱C.四棱锥D.四棱柱【答案】:B【解析】:根据所给三视图易知,对应的几何体是一个横放着的三棱柱.选 B 9.执行下图的程序框图,若输入的,a b k分别为 1,2,3,则输出的M=A.203B.165C.72D.158【答案】:D【解析】:输入1,2,3abk;1n时:1331,2,222Mab;2n时:28382,3323Mab;3n时:3315815,28838Mab;4n时:输出158M.选 D.10.已知抛物线C:xy2的焦点为F,yxA00,是 C 上一点,xFA045,则x0()A.1 B.2 C.4 D.8【答案】:A【解析】:根据抛物线的定义可知001544AFxx,解之得01x.选 A.11.设x,y满足约束条件,1,xyaxy且zxay的最小值为7,则a(A)-5(B)3(C)-5 或 3(D)5 或-3【答案】:B【解析】:画出不等式组对应的平面区域,如图所示.文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3在平面区域内,平移直线0 xay,可知在点 A11,22aa处,z 取得最值,故117,22aaa解之得 a 5或a 3.但a 5时,z取得最大值,故舍去,答案为a 3.选B.(12)已知函数32()31f xaxx,若()fx存在唯一的零点0 x,且00 x,则a的取值范围是(A)2,(B)1,(C),2(D),1【答案】:C【解析 1】:由已知0a,2()36fxaxx,令()0fx,得0 x或2xa,当0a时,22,0,()0;0,()0;,()0 xfxxfxxfxaa;且(0)10f,()f x有小于零的零点,不符合题意。当0a时,22,()0;,0,()0;0,()0 xfxxfxxfxaa要使()f x有唯一的零点0 x且0 x 0,只需2()0fa,即24a,2a选 C【解析 2】:由已知0a,()f x=3231axx有唯一的正零点,等价于3113axx有唯一的正零根,令1tx,则问题又等价于33att有唯一的正零根,即ya与33ytt有唯一的交点且交点在在y 轴右侧,记3()3f ttt2()33ftt,由()0ft,1t,,1,()0;1,1,()0;tfttft,1,()0tft,要使33att有唯一的正零根,只需(1)2af,选 C 第II 卷二、填空题:本大题共4 小题,每小题5 分(13)将 2 本不同的数学书和1本语文书在书架上随机排成一行,则 2 本数学书相邻的概率为_.【答案】:23【解析】设数学书为 A,B,语文书为 C,则不同的排法共有(A,B,C),(A,C,B),(B,C,A),(B,A,C),(C,A,B),(C,B,A)共 6 种排列方法,其中文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K32 本数学书相邻的情况有4 种情况,故所求概率为4263P.(14)甲、乙、丙三位同学被问到是否去过A、B、C三个城市时,甲说:我去过的城市比乙多,但没去过B城市;乙说:我没去过C城市;丙说:我们三人去过同一城市;由此可判断乙去过的城市为_.【答案】:A【解析】丙说:三人同去过同一个城市,甲说没去过B 城市,乙说:我没去过C 城市三人同去过同一个城市应为,乙至少去过,若乙再去城市B,甲去过的城市至多两个,不可能比乙多,可判断乙去过的城市为.(15)设函数113,1,1,xexfxxx则使得2fx成立的x的取值范围是 _.【答案】:,8【解析】当x 1时,由12xe可得x 1ln 2,即x ln 2 1,故x 1;当x 1时,由 f(x)13x2可得x 8,故1x 8,综上可得 x 8(16)如图,为测量山高MN,选择A和另一座山的山顶C为测量观测点.从A点测得M点的仰角60MAN,C点的仰角45CAB以及75MAC;从C点测得60MCA.已知山高100BCm,则山高MN_m.【答案】:150 文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3【解析】在直角三角形ABC 中,由条件可得1002AC,在 MAC 中,由正弦定理可得0000sin60sin 1806075AMAC,故31 0 0 32A MA C,在直角 MAN 中,0sin 60150MNAM.三、解答题:解答应写出文字说明,证明过程或演算步骤.(17)(本小题满分12 分)已知na是递增的等差数列,2a,4a是方程2560 xx的根。(I)求na的通项公式;(II)求数列2nna的前n项和.【解析】:(I)方程2560 xx的两根为 2,3,由题意得22a,43a,设数列na的公差为d,,则422aad,故 d=12,从而132a,所以na的通项公式为:112nan 6 分()设求数列2nna的前n项和为 Sn,由()知1222nnnan,则:23413451222222nnnnnS34512134512222222nnnnnS两式相减得341212131112311212422224422nnnnnnnS所以1422nnnS 12 分(18)(本小题满分12 分)从某企业生产的某种产品中抽取100 件,测量这些产品的一项质量指标值,由测量表得如下频数分布表:质量指标值分组75,85)85,95)95,105)105,115)115,125)频数6 26 38 22 8(I)在答题卡上作出这些数据的频率分布直方图:文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3(II)估计这种产品质量指标值的平均数及方差(同一组中的数据用该组区间的中点值作代表);(III)根据以上抽样调查数据,能否认为该企业生产的这种产品符合“质量指标值不低于95的产品至少要占全部产品的80%”的规定?【解析】:(I)4分(II)质量指标值的样本平均数为800.06900.261000.381100.221200.08100 x.质量指标值的样本方差为22222200.06100.2600.38100.22200.08104s 10 分()质量指标值不低于95 的产品所占比例的估计值为0.38+0.22+0.08=0.68.由于该估计文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1 HG2D1B8U7R1 ZP10V9L5B6K3文档编码:CE6W5L7M8C1