1 . 若数列
满足:当
时,
(
),则数列
的前28项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e74951ee460820aaa3a29a71be93ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecd6a1476bd15e0d36832b3382ebc3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7399fcd570d1de4057f2059759d18cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.2048 | B.2046 | C.4608 | D.4606 |
您最近一年使用:0次
2024-02-03更新
|
1050次组卷
|
3卷引用:1.3.2 等比数列的前n项和5种常见考法归类(2)
(已下线)1.3.2 等比数列的前n项和5种常见考法归类(2)安徽省合肥市第一中学2024届高三上学期期末质量检测数学试题辽宁省沈阳市东北育才学校科学高中部2023-2024学年高二下学期期中考试数学试题
名校
解题方法
2 . 数列
的前
项和
,且
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f4a40025407dfbf044632f27c641c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 . 在平面直角坐标系上,设不等式组
所表示的平面区域为
.记
内的整点(即横坐标和纵坐标均为整数的点)的个数为
.
(1)求
,
,
,并猜想
的表达式再用数学归纳法加以证明;
(2)设数列
的前
项和为
,数列
的前
项和为
,是否存在自然数
,使得对一切
,
恒成立.若存在,求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c8440e20124eb80265137d1014aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13edce96379387415b4c8e996a92abe.png)
(1)求
![](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/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33591caf3f8bec653e47cd9b644ae9c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
解题方法
4 . 在数列
中,
,对
恒成立,若
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed9eddaa5acfc2b86ac4b5ec306fc62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639a71fa7f63d5d4ee4b2579059e481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4063e8d8f291d7e9305f04b70de868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
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2023-03-26更新
|
533次组卷
|
5卷引用:4.1 等差数列(第2课时)(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)4.1 等差数列(第2课时)(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)河南省部分学校大联考2022-2023学年高三下学期3月质量检测理科数学试题河南省濮阳市2023届高三下学期3月份质量检测理科数学试题(已下线)模块三 专题2 题型突破篇 小题进阶提升练(2)期末终极研习室(2023-2024学年第一学期)高三(已下线)第4章 数列 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
名校
解题方法
5 . 已知数列
满足
,
,数列
的前
项和为
,则
的整数部分是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc41c56af4acce0e418b561ea6e736d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b50ec7342673cc1f11b613c3efd3c6c.png)
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2023-02-22更新
|
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3卷引用:1.1数列的概念测试卷
解题方法
6 . 已知在数列
中,
,且
,设
,若
,则正整数m的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d754bc529cfab94af50384ef686b191d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2143dbeaacc70959e3bcc6a9b48836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d31f1dc8da38a0a947b098284e09648.png)
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2022高三·全国·专题练习
名校
解题方法
7 . 设n是正整数,r为正有理数.
(1)求函数
的最小值;
(2)证明:
;
(3)设
,记
为不小于x的最小整数,例如
,
,
.令
,求
的值.
(参考数据:
,
,
,
.)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0d7b3f0c1dc6ae73caa79af157a11d.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7e9e252a70a7684b6ffc848fce493.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898a6c355155c992f5e44bb86684225a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2920f45281a12f86b030a132bcc2416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4e08a700019de14d9662815173fa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a4445715259619217dffa47f431a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa334c2d71c4e4a5a707fff30dbf20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa2b51518d8a07f8aee74b0d83a59ff.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3099ecf9f1f6dd97203f319369af2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1793985234bb6517f82deeff92f495af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a19c0e54ac65527b11a31a2de0a64e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843ad0ae750ff474168613f0eac00983.png)
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2023-05-23更新
|
641次组卷
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5卷引用:第5章 一元函数的导数及其应用(新文化与压轴30题专练)-2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)
(已下线)第5章 一元函数的导数及其应用(新文化与压轴30题专练)-2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)第34讲 估值问题-突破2022年新高考数学导数压轴解答题精选精练(已下线)第二篇 函数与导数专题4 不等式 微点2 伯努利不等式(已下线)第三篇 数列、排列与组合 专题2 多边形数、伯努利数、斐波那契数、洛卡斯数、明安图数与卡塔兰数 微点3 伯努利数天津市南开中学2024届高三上学期第三次月考数学试题
8 . 已知数列
中,
,当
时,
,记
.
(1)求数列
的通项公式;
(2)设数列
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc06122d220dccaffc64bf0eaeddc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5653b60d16ec4e653518f0562680250.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30136113176ba7fe660e998d0873157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7d6bcb2f499cf28d5d79cf6d925f39.png)
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2022-12-02更新
|
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6卷引用:4.2 等差数列(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)
(已下线)4.2 等差数列(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)湖南省郴州市安仁县第一中学2021-2022学年高二数学模拟试题(已下线)山东省青岛第二中学2022-2023学年高三上学期1月期末测试数学试题变式题17-22(已下线)专题06 数列求和-2022-2023学年高二数学新教材同步配套教学讲义(苏教版2019选择性必修第一册)(已下线)专题训练:数列综合运用大题-【题型分类归纳】2022-2023学年高二数学同步讲与练(人教A版2019选择性必修第二册)(已下线)拓展三:数列与不等式 -【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)
9 . 已知数列
满足
,
,令
,设数列
前n项和为
.
(1)求证:数列
为等差数列;
(2)若存在
,使不等式
成立,求实数
的取值范围;
(3)设正项数列
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8363902560fce392e05042b7287929a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacbbf38ec1b411cfd9693874bebd4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5fc0b571e6545e133d36af338733b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb3185977be193745f403547d1e9800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8261beeefacd521644faf4658227a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d1dbbe083e1e1672b2439ea746d976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf47abf4f5649d379a8a69983a3fc56.png)
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2022-07-21更新
|
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7卷引用:4.1 等差数列(第2课时)(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)4.1 等差数列(第2课时)(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)四川省眉山市2021-2022学年高一下学期期末数学(理)试题广东省广东实验中学2023届高三上学期第一次段考数学试题(已下线)4.2.3 等差数列的前n项和-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)4.2.2.2 等差数列的前n项和的性质及应用(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)专题15 数列不等式的证明 微点6 数列不等式的证明综合训练(已下线)数列与不等式
名校
解题方法
10 . 已知数列
满足:
,
,且
,
,其中
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00ad66107d8f9afe62d73199c133ea8.png)
___________ ,若
,则使得
成立的最小正整数
为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0483a2816b0472a5b4a09f1a716ae01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd1c4630ae43edf9ee4dbbc300c7e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01d7f7114b0e11e721da2aecb48ec3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c111ae39998037ad9c2eef5a892b3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00ad66107d8f9afe62d73199c133ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8bac7b8aea5d87dba8c3a8b6cd7c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f985087c890874af62a73eab51cc26a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2022-05-23更新
|
814次组卷
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7卷引用:4.4 数学归纳法(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)4.4 数学归纳法(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)福建省莆田第二中学2022届高三5月模拟考试数学试题(已下线)专题12 数列(已下线)江苏省盐城市、南京市2022届高三上学期1月第一次模拟考试数学试题变式题11-16山东省日照市2024届高三上学期12月校际联合考试数学试题(已下线)第1讲:数列的函数性质应用【讲】(已下线)第1讲:数列的函数性质应用【讲】1