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2022年数列求和数列的综合应用练习题 .pdf

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1、数列求和、数列的综合应用练习题1.数列20,2,2101akaak共十项，且其和为 240，则101aaak的值为（）A.31 B.120 C.130 D.185 2.已知正数等差数列na的前 20 项的和为 100，那么147aa的最大值是（）A.25 B.50 C.100 D.不存在3.设函数xxfmlog)(（0m，且1m），数列na的公比是 m的等比数列，若8)(200931aaaf，则)()()(220102221afafaf的值等于（）A.-1974 B.-1990 C.2022 D.2042 4.设等差数列na的公差0d，又921,aaa成等比数列，则1042931aaaaaa

2、.5.已知二次函数xxxf23)(2，数列na的前 n项和为ns，点（nsn,）（*n）在函数)(xfy的图像上.（1）球数列na的通项公式；（2）设13nnnaab，nT 是数列nb的前 n 项和，求使20mTn对所有*n都成立的最小正整数 m.6.（2014广东湛江模拟）已知数列na各项均为正，其前 n项和为ns，且满足2)1(4nnaS.（1）求na的通项公式；（2）设11nnnaab，求数列nb的前 n 项和nT 及nT 的最小值.7.（2014 安徽，18，12 分）数列na满足)1()1(,111nnannaann，*n.（1）证明：数列nan是等差数列；（2）设nnnab3，求数

3、列nb的前 n 项和为ns.8.（2014 湖北，19，12 分）已知等差数列na满足：21a，且521,aaa成等比数列.（1）求数列na的通项公式；（2）记nS 为数列na的前 n项和，是否存在正整数n，使得80060nSn？若文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1

4、F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P

5、4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:

6、CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 H

7、D1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA

8、4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编

9、码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4存在，求 n的最小值；若不存在，

10、说明理由.9.（2014 湖南师大附中第二次月考，19）甲、乙两超市同时开业，第一年的年销售额都为 a万元.由于经营方式不同，甲超市前n（*n）年的总销售额为)2(22nna万元；从第二年起，乙超市第n 年的销售额比前一年的销售额多an 132万元.（1）设甲、乙两超市第 n 年的销售额分别是nnba,，求nnba,的表达式；（2）若在同一年中，某一超市的年销售额不足另一个超市的年销售额的50%，则该超市将于当年年底被另一家超市收购.问：在今后若干年内，乙超市能否被甲超市收购？若能，请推算出在哪一年年底被收购；若不能，请说明理由.10.从社会效益和经济效益出发，某地投入资金进行生态环境建设，并

11、以此发展旅游产业，根据规划，本年度投入800 万元，以后每年投入比上年减少51，本年度当地旅游业收入估计为400 万元，由于该项建设对旅游业的促进作用，预计今后的旅游业收入每年会比上年增加41.（1）设 n年内（本年度为第一年）总投入为na 万元，旅游业总收入为nb 万元，文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F

12、4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2

13、D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z

14、5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T1

15、0F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5

16、C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R

17、8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3

18、T10F4写出na，nb 的表达式；（2）至少经过几年，旅游业的总收入才能超过总投入？11.（2014 四川，19，12 分）设等差数列na的公差为d，点),(nnba在函数xxf2)(的图像上（*n）.（1）证明：数列nb为等比数列；（2）若11a，函数)(xf的图像在点),(22ba处的切线在 x轴上的截距为2ln12，求数列2nnba的前 n项和nS.文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T1

19、0F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5

20、C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R

21、8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3

22、T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4

23、K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F

24、7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4

25、I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F412.（2014 江西上饶六校第二次联考，18）已知等差数列na的前 n 项和为nS，且15,252Sa，数列nb满足211b，nnbnnb211.（1）求数列,nnba的通项公式；（2）记nT 为数列nb的前 n项和，2)2(2)(nTSnfnn，试问)(nf否存在最大值，若存在，求出最大值，若不存在请说明理由13.（2012 四川，12,5 分）设函数3()(3)1f xxx，数列 na是公差不为 0的等差数列，127()()()14f af af a，则127aaa（）A.0 B.7 C.14

26、 D.21 14.（2012山东,20,12 分）已知等差数列na的前 5 项和为 105，且2052aa.（1）求数列na的通项公式；（2）对任意*mN，将数列na中不大于27m的项的个数记为mb.求数列mb的文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 Z

27、A4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档

28、编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q

29、5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9

30、 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4

31、文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D

32、9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4前m项和mS.15.（2013课标全国，17,12）

33、已知等差数列na的公差不为零,251a,且13111,aaa成等比数列.（1）求na的通项公式；（2）求14732naaaa.16.（2014 广东，19，14 分）设各项均为正数的数列na的前n项和为nS，且nS满足222*330,nnSnnSnnnN.（1）求1a的值；（2）求数列na的通项公式；（3）求证：对一切正整数n，有112211111113nnaaaaaa.文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 Z

34、A4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档

35、编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q

36、5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9

37、 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4

38、文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D

39、9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5

40、V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F417.（2013 山东,20,12 分）设等差数列的前项和为,且,（1）求数列的通项公式；（2）设数列满足,求的前项和.18.（2014 安徽，12，5 分）如图，在等腰直角三角形ABC中，斜边2 2BC，过点 A作BC的垂线，垂足为1A；过点1A作AC的垂线，垂足为2A；过点2A作1AC的垂线，垂足为3A；，以此类推，设1BAa，12AAa，123A Aa，567A Aa，则7a_.19.（2014 课标,17,12分）已知是na递增的等差数列，42,aa是方程0652xx的根（1

41、）求na的通项公式；（2）求数列nna2的前 n项和文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9

42、 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4

43、文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D

44、9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5

45、V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10

46、F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C

47、2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4 20.（2014湖南，21，13 分）已知函数)0(1sincos)(xxxxxf.（1）求)(xf的单调区间；（2）记ix 为)(xf的从小到大的第i（*i）个零点，证明：对一切*n，有3211122221n

48、xxx.21.（2014山东，19，12分）在等差数列na中，已知公差2d，2a 是1a 与4a的等比中项.（1）求数列na的通项公式；（2）设12nn nba，记12341nnnTbbbbb，求nT.文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I

49、3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF

50、4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1F7R8Z5V9 ZA4P4I3T10F4文档编码:CF4K5C2D9Q5 HD1

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