1 . 在①
;②
;③
这三个条件中任选一个,补充在下面问题中,并作答.
问题:已知等差数列
的前n项和为
,满足
,且________,
(1)求
的通项公式;
(2)设数列
的前n项和为
,求满足
的最大整数n的值.
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/d81b86f5cbf7c0e3434676e9d76c8e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9cfbd2a252af553e37a65a6ce43122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3662370730b43945d026659dfb5a296.png)
问题:已知等差数列
![](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/ed253514c9165a900976fc842c869270.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62e0fc7469c911e6e341dd89be87316.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2 . 在等差数列
中,
.
(1)求
的通项公式;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6953ffc67998fe436c5ca99b19c0df.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1183d073d338f0f8520ea9a830280065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2023-12-22更新
|
2138次组卷
|
7卷引用:模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)
(已下线)模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)(已下线)模块五 专题3 期末全真模拟(能力卷1)高二期末海南省海口市海南中学2023-2024学年高二上学期期末考试数学试题山西省部分学校2024届高三上学期12月联考数学试题(已下线)专题04 数列通项与求和技巧总结(十大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)(已下线)第4.4讲 数列求和综合应用-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)广东省部分名校2024届高三上学期联合质量检测数学试题
2023·全国·模拟预测
3 . 记
为等差数列
的前
项和,已知
,
.
(1)若
,求数列
的通项公式.
(2)若数列
是等差数列,且
,其前
项和为
,求
的值,并求使
成立的
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabc9fa8a7f1d926dac38410a67532cb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f2c449482c920ea3fc75be99b13b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eae42ab4bb312d851ead5e298db735b.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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da2e59d55e8baa4525358342d004e44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解题方法
4 . 已知
是等差数列,
是公比大于0的等比数列,
的前n项和为
,且
,
,
,
.
(1)求
和
的通项公式;
(2)求数列
的前n项和
.
![](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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4660b8e4504f8ad6fe504690c8d033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0bcccf7cd754d20f37c1f1ca72c3e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed438eb9a5489371009ffe76a055c86.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec12a9a60f82467bf7bf834a9a9b1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2023-11-14更新
|
803次组卷
|
3卷引用:模块一 专题5《等差数列与等比数列》单元检测篇 B提升卷 期末终极研习室(高二人教A版)
(已下线)模块一 专题5《等差数列与等比数列》单元检测篇 B提升卷 期末终极研习室(高二人教A版)重庆市部分区2022-2023学年高二上学期期末联考数学试题新疆维吾尔自治区昌吉市第一中学2023-2024学年高二上学期12月月考数学试题
5 . 已知等差数列
的前
项和为
,
,
为整数,且
.
(1)求
的通项公式;
(2)设数列
满足
,且数列
前
项和为
,若
对
恒成立,求实数
的取值范围.
![](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/8dc759e6f45cff8dacef4206490e98a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f228cbf7d133f4af1640f128487b3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f36fb7c172c49b868df7e7d44f08502.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/dfa37fbaf932b05bf205441dbaac6d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-11-10更新
|
1516次组卷
|
7卷引用:模块五 期末重组篇 专题3 高三期末
6 . 记
为等差数列
的前n项和,已知
.
(1)求
的通项公式;
(2)记
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7046014a01471501ec13577b4a3ae1cb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075cbd1b5da2e265bf84d206c3e36b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2024-04-06更新
|
738次组卷
|
3卷引用:1号卷·A10联盟2021-2022学年(2020级)高二下学期期末联考数学试卷(北师大版)
7 . 已知数列
与
的前
项和分别为
和
,且对任意
,
恒成立.
(1)若
,
,求
;
(2)若对任意
,都有
及
恒成立,求正整数
的最小值.
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1505d56f0b35fe7f2de1fe1888036e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2197f041a6b273ba17a7ea676e2cde5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48cf69e08cbaffaa8453b1a0b951f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1505d56f0b35fe7f2de1fe1888036e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deef5bc756c91fbc7a6ca5a6b5d744d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989cecae726cad5043442e6214ccf3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
您最近一年使用:0次
2023-09-29更新
|
553次组卷
|
5卷引用:每日一题 第5题 不等式型 关键求和(高三)
(已下线)每日一题 第5题 不等式型 关键求和(高三)(已下线)特训02 期末解答题汇编(第1-5章,精选38道)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)河南省开封市通许县等3地2023届高三信息押题卷理科数学试题广东五校2022-2023学年高二下学期期末联考数学试题江西省宁冈中学2024届高三上学期11月期中考试数学试题
解题方法
8 . 已知数列
满足
,
,且
,
.
(1)证明:数列
为等差数列;
(2)记数列
的前n项和为
,求数列
的通项公式,并求出使得不等式
成立的n的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20616e3d8fc3aea730b3eefeef902b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf584ab870ec1990971ce332b74ddbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b65c44af8125cfd1e8c9a6d2985bcee6.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf33b2a94eae16760d746f9b4b8dbc.png)
(2)记数列
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa06f906c8f9b48407cc1c52f9629cc6.png)
您最近一年使用:0次
名校
解题方法
9 . 已知数列
满足
,数列
满足
.
(1)求
的通项公式;
(2)求
的前20项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5790d9eb8ada21dfd003cf699f2ea92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28d09cd391c9226e09aba4d379d4bd9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2023-08-02更新
|
877次组卷
|
5卷引用:模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)
(已下线)模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)(已下线)第06讲:数列求和 (必刷5大考题+5大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)贵州省三新改革联盟校2022-2023学年7月高二下学期期末联考数学试题江西省萍乡市安源中学2022-2023学年高二下学期期末考试数学试题(已下线)专题突破卷17 数列求和-1
解题方法
10 . 已知:等比数列
的首项
,公比
,前
项和为
.
(1)求
的通项公式
及前
项和
;
(2)若
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f45f5bc7c648c0e8924b4fa7b1ad08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8198b442b5e923751be543b6748910.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)
您最近一年使用:0次