名校
解题方法
1 . 在平面直角坐标系
中,
和
是圆
上的两点,且
,点
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360219e869c4b3da4e1b822d393ff742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37405c316c8872c62831c1c9c7c4ad0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-04-14更新
|
2085次组卷
|
6卷引用:重庆市第一中学2019-2020学年高三下学期3月月考数学(理)试题
重庆市第一中学2019-2020学年高三下学期3月月考数学(理)试题北京市首师大附中2021届高三4月份高考数学模拟试题(已下线)专题9-2 圆的综合题型归类-2(已下线)第二章 直线和圆的方程(选拔卷)-【单元测试】2021-2022学年高二数学尖子生选拔卷(人教A版2019选择性必修第一册)安徽省芜湖市2021-2022学年高二上学期期中联考数学试题(已下线)第2章《圆与方程》 培优测试卷(二)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
2 . 给定一个n项的实数列
,任意选取一个实数c,变换T(c)将数列a1,a2,…,an变换为数列|a1﹣c|,|a2﹣c|,…,|an﹣c|,再将得到的数列继续实施这样的变换,这样的变换可以连续进行多次,并且每次所选择的实数c可以不相同,第k(k∈N*)次变换记为Tk(ck),其中ck为第k次变换时选择的实数.如果通过k次变换后,数列中的各项均为0,则称T1(c1),T2(c2),…,Tk(ck)为“k次归零变换”.
(1)对数列:1,3,5,7,给出一个“k次归零变换”,其中k≤4;
(2)证明:对任意n项数列,都存在“n次归零变换”;
(3)对于数列1,22,33,…,nn,是否存在“n﹣1次归零变换”?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaad499c61359539c24c3661032b437.png)
(1)对数列:1,3,5,7,给出一个“k次归零变换”,其中k≤4;
(2)证明:对任意n项数列,都存在“n次归零变换”;
(3)对于数列1,22,33,…,nn,是否存在“n﹣1次归零变换”?请说明理由.
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3 . 已知函数f(x)
x+alnx.
(1)求f(x)在(1,f(1))处的切线方程(用含a的式子表示)
(2)讨论f(x)的单调性;
(3)若f(x)存在两个极值点x1,x2,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7842580c9151d280f1205fd74f292f32.png)
(1)求f(x)在(1,f(1))处的切线方程(用含a的式子表示)
(2)讨论f(x)的单调性;
(3)若f(x)存在两个极值点x1,x2,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5f6c52c15316b16b823b8eb050f79a.png)
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4 . 有限数列
:
,
,…,
.(
)同时满足下列两个条件:
①对于任意的
,
(
),
;
②对于任意的
,
,
(
),
,
,
,三个数中至少有一个数是数列
中的项.
(1)若
,且
,
,
,
,求
的值;
(2)证明:
,
,
不可能是数列
中的项;
(3)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
①对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431acf301f0cf1e414b532de94708474.png)
②对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247bf9c5c1ad2b3e50952ec92afa3ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f52783e7a39f438adf08ef7d05d8c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8343838b2f9943d83231763b2078136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be0f858adaefa50f7c99e6062fdf2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ad229a63bc75abfa8f5a48fe99038f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3859890e300f470dcf4a215249da07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2021-11-19更新
|
1230次组卷
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10卷引用:2015届北京市海淀区高三下学期期中练习(一模)理科数学试卷
2015届北京市海淀区高三下学期期中练习(一模)理科数学试卷北京市北京师范大学第二附属中学2019-2020学年高二上学期期中数学试卷北京市第五十七中学2019-2020学年高二上学期期中考试数学试题重庆市缙云教育联盟2022届高三上学期第O次诊断性检测数学试题(已下线)北京市第四中学2022届高三下学期(三模)保温练习数学试题北京卷专题18数列(解答题)(已下线)北京市第四中学2023届高三数学保温测试试题北京市十一学校2022届高三下学期2月诊断数学试题北京市第八中学2024届高三上学期10月练习数学试题北京市汇文中学教育集团2023-2024学年高三下学期开学考数学试题
名校
5 . 已知函数
,
.
(1)已知函数
在
取得极小值,求
的值;
(2)讨论函数
的单调区间;
(3)当
时,若存在
使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f5d6c6d42ca2ac86343ca2ababc732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b70f8691af2a1d287aa5c476ede5e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03cacfebdb18fa71e4f87c70d35ebc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b27b4a9c01b0bfe586ffb7ed4bcce36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-11-07更新
|
357次组卷
|
3卷引用:北京市人大附中2018届高三高考数学(理科)零模试题
6 . 数列
的各项均为整数,满足:
,且
,其中
.
(1)若
,写出所有满足条件的数列
;
(2)求
的值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c443dd1ce0f02cae28a35d69816031a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae17052168f340cb0757dc1ec0959489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65560724cdbf1a53160359333bba73b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9efeb4455e30293d412938eeea85d5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2309691b0e1b023bcb8d485cce6f1721.png)
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2020-03-12更新
|
424次组卷
|
2卷引用:2019届北京市一零一中学高三下学期月考(三)数学(理)试题
名校
7 . 已知椭圆
的离心率为
,以原点为圆心,椭圆
的短半轴长为半径的圆与直线
相切.
(Ⅰ)求椭圆方程;
(Ⅱ)设
为椭圆右顶点,过椭圆
的右焦点的直线
与椭圆
交于
,
两点(异于
),直线
,
分别交直线
于
,
两点. 求证:
,
两点的纵坐标之积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026fced6e02fab3a836d0f0280d3f3bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38f9106cef0b638e62c90afc1c523cd.png)
(Ⅰ)求椭圆方程;
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4aca03910382accfe738520daf689c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10109d34ef06c3e721fd2c7128c5b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cd9b2bc7f7e900d3009d343aac1904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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2020-01-21更新
|
1037次组卷
|
8卷引用:北京市中国人民大学附属中学2020届高三3月月考数学试题
北京市中国人民大学附属中学2020届高三3月月考数学试题北京市丰台区2019-2020学年高三上学期期末数学试题2020届高三2月第01期(考点08)(理科)-《新题速递·数学》2020届北京市第八中学高三下学期自主测试(一)数学试题(已下线)专题05 拿高分题目强化卷(第三篇)-备战2021年新高考数学分层强化训练(北京专版)(已下线)专题03 拿高分题目强化卷(第三篇)-备战2021年新高考数学分层强化训练(北京专版)广东省广雅中学2021届高三上学期9月月考数学试题北京市首都师范大学附属中学2020-2021学年高二上学期期末考试数学试题
2020高三·江苏·专题练习
名校
8 . 已知函数
,
.
(1)当
时,求函数
的最小值;
(2)若
,证明:函数
有且只有一个零点;
(3)若函数
有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479871ff63a04fceb1595743f820061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c547c64dc542c2d192a6ece476fc9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3ae659e6df439539dd0b7d3f796802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-01-17更新
|
498次组卷
|
3卷引用:专题01 函数的图像与性质-《巅峰冲刺2020年高考之二轮专项提升》(江苏)
名校
9 . 已知曲线
(
为常数).
(i)给出下列结论:
①曲线
为中心对称图形;
②曲线
为轴对称图形;
③当
时,若点
在曲线
上,则
或
.
其中,所有正确结论的序号是_________ .
(ii)当
时,若曲线
所围成的区域的面积小于
,则
的值可以是_________ .(写出一个即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa04668d4a84a4408755101ec5bcbf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(i)给出下列结论:
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0636ea90e009f020392980f18bc648b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f575a1608f883f9a5a2354435726956.png)
其中,所有正确结论的序号是
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c8951e515ff33eb8292e769d146885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-01-10更新
|
869次组卷
|
10卷引用:北京市海淀区2019-2020学年高三上学期期末数学试题
北京市海淀区2019-2020学年高三上学期期末数学试题(已下线)专题11 双曲线及其性质-2020年高考数学母题题源解密(北京专版)(已下线)专题09 曲线与方程——2020年高考数学母题题源解密(山东、海南专版)北京市第四十四中学2021届高三上学期期中考试数学试题江苏省南京师大附中2020-2021学年高二上学期12月阶段检测数学试题(已下线)卷20-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)北京师范大学附属实验中学2022届高三12月统一练习数学试题北京师大实验中学2022届高三12月份月考数学试题(已下线)专题01 条件开放型【练】【北京版】江苏省南通中学2020-2021学年高二上学期期末数学试题
名校
10 . 给定整数
,数列
、
、
、
每项均为整数,在
中去掉一项
,并将剩下的数分成个数相同的两组,其中一组数的和与另外一组数的和之差的最大值记为
. 将
、
、
、
中的最小值称为数列
的特征值.
(Ⅰ)已知数列
、
、
、
、
,写出
、
、
的值及
的特征值;
(Ⅱ)若
,当
,其中
、
且
时,判断
与
的大小关系,并说明理由;
(Ⅲ)已知数列
的特征值为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f27f84764f1cca89ce3d93fc1cf603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c001a6e4b0d343b19d786540023d56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0529548612b545c590f3c34748dadda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596afe6f8149e39c53d36a759bee6151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5955cdc67877bd65a9e5459136068f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b54eb70b245565d24b1ef62ba3eae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
(Ⅰ)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea20f2594f7a698164e725362f08938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a34aea9f11eb0421ff2b6b576a4823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5002f030017f6f0b34a61b2e15c5a9cb.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a661a06d098000ecda9b7014bdef5c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a601ca47cb4e4c34cd3f3ca690c545bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce11c144e2432591134625c58983977e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056320894da587b21690aba61e49a064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a3de213023385be927c374aa405c4f.png)
(Ⅲ)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd301c81a6c61e69a253be6f33d2b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b1c95617bbb9f526f72a615ae41c0d.png)
您最近一年使用:0次
2020-01-10更新
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814次组卷
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11卷引用:北京市海淀区2019-2020学年高三上学期期末数学试题
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