1 . 已知数列
的前
项和为
,在①
②
,③
这三个条件中任选一个,解答下列问题.
(1)求出数列
的通项公式;
(2)若设
,数列
的前
项和为
,证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
注:如果选择多个条件分别解答,按第一个解答计分.
![](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/2edeb1f47dfcc97e3317bd3b66c84517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d3ad744c3967aa85dead18e9d17cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610bf0995865773e408651b22c229033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af86bc4de5ef8fb1c97ca66ef4720a65.png)
(1)求出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7484eb1c64c64773677976d8e6281af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.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/f9928e46511e601913619a427ded84a3.png)
注:如果选择多个条件分别解答,按第一个解答计分.
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5卷引用:山东省淄博市淄博中学2023-2024学年高二下学期第一次月考数学试题
2 . 设正项数列
的前
项之和
,数列
的前
项之积
,且
.
(1)求证:
为等差数列,并分别求
、
的通项公式;
(2)设数列
的前
项和为
,不等式
对任意正整数
恒成立,求正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b425d344cf967570ef9d9a3c53ad4d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdee207ed0aaf87c78a1fba1566042b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5175f3097ba91a11fc64feb1f272c1.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c83451624b13a97e0abf0f4a9b46f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea78d8e044bfada5b4c6cf44ea2a8d5.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/623174058f4dd7204d3a919a191bfa03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2021-07-08更新
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1196次组卷
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5卷引用:山东省济南市山东师范大学附属中学2022-2023学年高三下学期3月月考数学试题
名校
解题方法
3 . 已知数列
的前
项和为
,若
(
为非零常数),且
.
(1)求
的通项公式;
(2)若
,求
的前
项和
,并证明:
.
![](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/5c8e678cb4e4bdee7f87374cb5132cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d836a00b5e5fc994817d846097f42321.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c54748afbbb4b3169fe44538f3de118.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58319e98e36d4cf9fe4f049ddf2f0ce3.png)
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2022-04-11更新
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4卷引用:山东省潍坊市安丘市第一中学2023-2024学年高三上学期9月月考数学试题
山东省潍坊市安丘市第一中学2023-2024学年高三上学期9月月考数学试题河北省衡水市深州市部分学校2022届高三下学期3月联考数学试题(已下线)4.4 求和方法(精练)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)(已下线)专题05 数列 第三讲 数列与不等关系(解密讲义)
解题方法
4 . 已知
和
均为等差数列,
,
,
,记
,
,…,
(n=1,2,3,…),其中
,
,
,
表示
,
,
,
这
个数中最大的数.
(1)计算
,
,
,猜想数列
的通项公式并证明;
(2)设数列
的前n项和为
,若
对任意
恒成立,求偶数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf2a2590bb84d646957f913d78f6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8f08a2e3a40cc2fb680104133df13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4602c763b6896b76ec80c73cbb6b0126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075255ba5f02900e250ff61f7491dc5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f40db3e0b43d3e92b807827c1612f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d294754430977273da149a8ea6c345da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a202bda83f2640744337ee18ad45dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a47d46ba3cddd9ba7e79b8d0369592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637f94c79ddadc15f305bed8adc45733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76f79be89b8c6227b68eded6b675546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db84454f051d418a4904fa423ab8b304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0909e967ae83425ea3b319bc25b3ad34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd32114b6a51df290934bce11b6e255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
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2022-04-08更新
|
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3卷引用:山东省潍坊市2022届高三下学期高中学科核心素养测评数学试题
5 . 在数列
中,
.
(1)求证:数列
是等差数列,并求
的通项公式;
(2)求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9cdaa5c83eec14144e8dfddfe8175a.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ffb5a730f63c06263f86e1dcd14e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77b7d945263c7f6debda44087f1bd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
6 . 已知数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34939b43c7f3b9a0157fe432411f24c.png)
(1)证明:数列
是等差数列,并求数列
的通项公式;
(2)设
为数列
的前
项和,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34939b43c7f3b9a0157fe432411f24c.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7706e0dba93c9f25c28bc8b01de44b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63b998f4909841e47575281936b3f55.png)
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2021-03-31更新
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6卷引用:山东省临沂市沂水一中2021届高三 二轮复习联考(一)
山东省临沂市沂水一中2021届高三 二轮复习联考(一)山东省青岛第十五中学2023-2024学年高二上学期阶段性自我检测数学试题山东省潍坊市临朐县第一中学2023-2024学年高二下学期3月月考数学试题(已下线)2021年高考数学(理)押题预测卷(新课标III卷)02(已下线)专题2.3 数列-常规型-2021年高考数学解答题挑战满分专项训练(新高考地区专用)江苏省苏州市张家港市崇真中学2021-2022学年高二上学期10月月考数学试题
名校
解题方法
7 . 已知各项均为正数的数列
的前n项和为
,
,
.
(1)求证;数列
是等差数列,并求
的通项公式;
(2)若
表示不超过
的最大整数,如
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11264c116959e9717f4d079451d82e73.png)
(1)求证;数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832d1e3a06f59a35396aac6e12c5e2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e560f75ef7647798a95e61c0a49aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c055f1d2e13acf5319f4de1ea9e94a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0188807e11695fad2f2bc64cdd682.png)
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2021-05-14更新
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4卷引用:山东省滨州市2021届高三二模(5月)数学试题
山东省滨州市2021届高三二模(5月)数学试题湖北省武汉市蔡甸区汉阳一中2021届高三仿真模拟(六)数学试题(已下线)全真模拟卷02-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)NO.4 练悟专区——解答题规范练-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)
8 . 已知数列{an}的首项a1=4,{an+1﹣2an}是以4为首项,以2为公比的等比数列,
(1)证明数列
是等差数列,并求{an}的通项公式;
(2)在①bn=an+1﹣an;②bn=log2
;③bn=
这三个条件中任选一个补充在下面横线上,并加以解答.
已知数列{bn}满足_____,求{bn}的前n项和Tn.
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25cbe66fe4e84b4022721122baab4a3.png)
(2)在①bn=an+1﹣an;②bn=log2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429a3d34eaa70efaaa3a301946aa51e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8e90d40c44dd9997fc1a53cf0e06ec.png)
已知数列{bn}满足_____,求{bn}的前n项和Tn.
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名校
解题方法
9 . 已知数列
前
项和
满足
.
(1)设
,求数列
的通项公式;
(2)若
,数列
的前
项和为
,求证:
.
![](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/7dafce4e8af025a6c71c9fb2853ad05a.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac8e1d60f036093acd1e8fb476226b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c22a538d8aab23e88223a8d79b625b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc3e6e3fddd8ef987e7f35374a0d997.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/e796c1745092ee78431cbe65994e3d01.png)
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2020-11-24更新
|
1202次组卷
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3卷引用:山东省德州市2020-2021学年高三上学期期中考试数学试题
10 . 已知数列
中,
,且
.记
,求证:
(1)
是等比数列;
(2)
的前
项和
满足:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8323901a49cac29afd7d62864f088077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e70b04fb4879fd9b98a103c793414c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa2c9432a4d4a76ba6644ff4f195f8d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0a7b2842d6a857e22d39a482a3c72b.png)
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2021-04-18更新
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6卷引用:山东枣庄2021届高三数学二模试题
山东枣庄2021届高三数学二模试题(已下线)押新高考第18题 数列-备战2021年高考数学临考题号押题(新高考专用)(已下线)押第17题 解三角形与数列-备战2021年高考数学(文)临考题号押题(全国卷2)(已下线)专题7.20 数列大题(裂项相消求和2)-2022届高三数学一轮复习精讲精练(已下线)热点03 等差数列与等比数列-2022年高考数学【热点·重点·难点】专练(全国通用)(已下线)专题07 等差数列与等比数列-2022年高考数学毕业班二轮热点题型归纳与变式演练(新高考专用)