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1、2019年普通高等学校招生全国统一考试文科数学注意事项：1答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。2回答选择题时，选出每小题答案后，用铅笔把答题卡对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，将答案写在答题卡上。写在本试卷上无效。3考试结束后，将本试卷和答题卡一并交回。一、选择题：本题共12 小题，每小题5 分，共 60 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设3i12iz，则z=A2 B3C2D1 2已知集合1,2,3,4,5,6,72,3,4,52,3,6,7UAB，则A1,6B1,7C6,7D1,6,
2、73已知0.20.32log 0.2,2,0.2abc，则ABCD4 古希腊时期，人们认为最美人体的头顶至肚脐的长度与肚脐至足底的长度之比是512（512 0.618，称为黄金分割比例)，著名的“断臂维纳斯”便是如此此外，最美人体的头顶至咽喉的长度与咽喉至肚脐的长度之比也是512若某人满足上述两个黄金分割比例，且腿长为105 cm，头顶至脖子下端的长度为26 cm，则其身高可能是abcacbcabbca精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页，共 9 页 -A165 cm B175 cm C185 cm D190 cm 5函数 f(x)=2sincosxxxx在-，的图像大致为ABC
3、D6某学校为了解1 000 名新生的身体素质，将这些学生编号为1，2，1 000，从这些新生中用系统抽样方法等距抽取100 名学生进行体质测验.若 46 号学生被抽到，则下面4 名学生中被抽到的是A8 号学生B200 号学生C616 号学生D815 号学生7tan255=A-2-3B-2+3C2-3D2+38已知非零向量a，b 满足a=2b，且（a-b）b，则 a 与 b 的夹角为A6B3C23D569如图是求112122的程序框图，图中空白框中应填入AA=12ABA=12ACA=112ADA=112A精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页，共 9 页 -文档编码:CB7K9N8O
4、1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL
5、1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X
6、3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 Z
7、B9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M1
8、0Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文
9、档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB
10、7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P610双曲线 C：22221(0,0)xyabab的一条渐近线的倾斜角为130，则 C 的离心率为A2sin40 B2cos40 C1sin50D1cos5011 ABC 的内角 A，B，C 的对
11、边分别为a，b，c，已知 asinA-bsinB=4csinC，cosA=-14，则bc=A6 B5 C4 D3 12已知椭圆C 的焦点为12(1,0),(1,0)FF，过F2的直线与C 交于A，B 两点.若22|2|AFF B，1|ABBF，则 C 的方程为A2212xyB22132xyC22143xyD22154xy二、填空题：本题共4 小题，每小题5 分，共 20 分。13曲线2)3(exyxx在点(0,0)处的切线方程为_14记 Sn为等比数列 an的前 n 项和.若13314aS，则 S4=_15函数3()sin(2)3cos2f xxx的最小值为 _16已知ACB=90，P为平面A
12、BC外一点，PC=2，点P到ACB两边AC，BC的距离均为3，那么P到平面ABC的距离为_三、解答题：共70 分。解答应写出文字说明、证明过程或演算步骤。第1721 题为必考题，每个试题考生都必须作答。第22、23 题为选考题，考生根据要求作答。（一）必考题：60 分。17（12 分）某商场为提高服务质量，随机调查了50 名男顾客和50 名女顾客，每位顾客对该商场的服务给出满意或不满意的评价，得到下面列联表：满意不满意男顾客40 10 女顾客30 20（1）分别估计男、女顾客对该商场服务满意的概率；（2）能否有 95%的把握认为男、女顾客对该商场服务的评价有差异？精品资料-欢迎下载-欢迎下载
13、名师归纳-第 3 页，共 9 页 -文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10
14、ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M
15、10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6
16、文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:C
17、B7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8
18、O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 H
19、L1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6附：22()()()()()n adbcKab cdac bdP（K2 k）0.050 0.010 0.001 k 3.841 6.
20、635 10.828 18（12 分）记 Sn为等差数列 an的前 n 项和，已知S9=-a5（1）若 a3=4，求 an 的通项公式；（2）若 a10，求使得 Sn an的 n 的取值范围19（12分）如图，直四棱柱ABCDA1B1C1D1的底面是菱形，AA1=4，AB=2，BAD=60，E，M，N 分别是BC，BB1，A1D 的中点.（1）证明：MN平面 C1DE；（2）求点 C 到平面 C1DE 的距离20（12 分）已知函数 f（x）=2sinx-xcosx-x，f（x）为 f（x）的导数（1）证明：f （x）在区间（0，）存在唯一零点；（2）若 x0，时，f（x）ax，求 a 的取值
21、范围21.（12 分）已知点 A，B 关于坐标原点O 对称，AB =4，M 过点 A，B 且与直线x+2=0 相切（1）若 A 在直线 x+y=0 上，求 M 的半径；精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页，共 9 页 -文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J
22、4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O
23、3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J
24、10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9
25、V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y
26、9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编
27、码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K
28、9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6（2）是否存在定点P，使得当 A 运动时，MA-MP 为定值？并说明理由（二）选考题：共10 分。请考生在第22、23 题中任选一题作答。如果多做，则按所做的第一题计分。22 选修 4-4：坐标系与参数方程（10 分）在直角坐标系xOy 中，曲线 C 的参数方程为2221141txttyt，（t 为参数），以坐标原点O 为极点，x 轴的正半轴为极轴建立极坐标系，直线l的极坐标方程为2cos3sin110（1）求C和l的直角坐标方程；（2）求 C 上的点到 l 距离的最小值23 选修 4-5：不等式选讲（10 分）已知 a，b，c
29、 为正数，且满足abc=1证明：（1）222111abcabc；（2）333()()()24abbcca精品资料-欢迎下载-欢迎下载 名师归纳-第 5 页，共 9 页 -文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:
30、CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N
31、8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4
32、HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H
33、2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10
34、 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7
35、M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P
36、62019年普通高等学校招生全国统一考试文科数学参考答案一、选择题1C 2C 3B 4B 5 D 6 C 7D 8B 9A 10D 11A 12B 二、填空题13y=3x145815-4 162三、解答题17解：（1）由调查数据，男顾客中对该商场服务满意的比率为400.850，因此男顾客对该商场服务满意的概率的估计值为 0.8女顾客中对该商场服务满意的比率为300.650，因此女顾客对该商场服务满意的概率的估计值为0.6（2）22100(402030 10)4.76250507030K由于4.7623.841，故有 95%的把握认为男、女顾客对该商场服务的评价有差异.18解：（1）设na的公差
37、为 d由95Sa得140ad由a3=4得124ad于是18,2ad因此na的通项公式为102nan（2）由（1）得14ad，故(9)(5),2nnn ndand S.由10a知0d，故nnSa等价于21110 0nn,，解得 1 n 10 所以 n的取值范围是|110,nnnN剟19解：精品资料-欢迎下载-欢迎下载 名师归纳-第 6 页，共 9 页 -文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y
38、9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编
39、码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K
40、9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J
41、4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O
42、3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J
43、10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9
44、V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6（1）连结1,B C ME.因为 M，E分别为1,BBBC的中点，所以1MEB C，且112MEB C.又因为 N为1A D的中点，所以112NDA D.由题设知11=A BDC，可得11=BCA D，故=MEND，因此四边形 MNDE为平行四边形，MNED.又MN平面1C DE，所以 MN平面1C DE.（2）过 C作C1E的垂线，垂足为H.由已知可得DEBC，1DEC C，所以 DE平面1C CE，故 DE
45、CH.从而 CH平面1C DE，故 CH的长即为 C到平面1C DE的距离，由已知可得 CE=1，C1C=4，所以117C E，故4 1717CH.从而点 C到平面1C DE的距离为4 1717.20解：（1）设()()g xfx，则()cossin1,()cosg xxxxgxxx.当(0,)2x时，()0gx；当,2x时，()0g x，所以()g x在(0,)2单调递增，在,2单调递减.精品资料-欢迎下载-欢迎下载 名师归纳-第 7 页，共 9 页 -文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J1
46、0 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V
47、7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9
48、P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码
49、:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9
50、N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4 HL1O3H2X3J10 ZB9V7M10Y9P6文档编码:CB7K9N8O1J4