名校
1 . 已知数列
满足
,
,
.
(Ⅰ) 证明:数列
是等比数列,并求数列
的通项公式;
(Ⅱ) 设
,求数列
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/92243e08480338fbb6c2672978c919cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(Ⅰ) 证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a080c94bf1ffea8d5af10f9688978fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ) 设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2269d26fc593f635ae433131919b13.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
2018-04-24更新
|
1503次组卷
|
5卷引用:【全国市级联考】湖南省怀化市2018年上期高二期末考试理科数学试题
名校
解题方法
2 . 设
为数列
的前
项和,已知
,
,
.
(Ⅰ)求
,
,并求数列
的通项公式;
(Ⅱ)求数列
的前
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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9efeb4455e30293d412938eeea85d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73897d5bca66853478c0e8e6c6b71278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(Ⅰ)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/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496f142d8ae5acb06e83526eaa3ef87.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
2019-10-14更新
|
627次组卷
|
14卷引用:湖南省怀化市2018-2019学年高三下学期期末博览联考数学(文)试题
湖南省怀化市2018-2019学年高三下学期期末博览联考数学(文)试题2015届山西省大同、同煤一中高三上学期期末考试理科数学试卷2015届辽宁省师大附中高三模拟考试文科数学试卷2015-2016学年河南省驻马店市高二上学期期末文科数学试卷【全国百强校】宁夏银川一中2019届高三第一次月考数学(文)试题【全国百强校】福建省莆田市第一中学2019届高三上学期第一次月考数学(文)试题北京市陈经纶中学2019-2020学年第一学期高二数学十月月考试题江西省赣州市南康区2019-2020学年高一下学期线上教学检测数学试题(二)山西省忻州市静乐县第一中学2020-2021学年高二上学期期始考试数学试题北京市新学道临川学校20120-2021学年高二上学期第一次月考数学试题河北省衡水市武强中学2020-2021学年高一下学期期中数学(理)试题(已下线)考点23 已知递推公式求同通项公式求数列的通项公式-备战2022年高考数学(文)一轮复习考点帮江苏省宿迁市北大附属宿迁实验学校2022-2023学年高三上学期11月期中数学试题内蒙古自治区赤峰第四中学2020-2021学年高一下学期第二次月考文科数学试题
3 . 若数列
满足
.
(1)求数列
的通项公式;
(2)若 ,求数列
的前
项和
.
①
,②
,③
.
(从这三个条件中任选一个填入第(2)问的横线中,并回答问题)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710717b5bc242f5810e912843770544b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若 ,求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dae1a8c188bd8587edde38c154073e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9be5bf50c5db10bdfef370807b0104d.png)
(从这三个条件中任选一个填入第(2)问的横线中,并回答问题)
您最近一年使用:0次
2020-10-18更新
|
324次组卷
|
2卷引用:湖南省怀化市沅陵县第一中学2020-2021学年高三上学期第一次月考数学试题
4 . 已知数列
的各项均为正数,其前
项和为
,且
,
.
(1)求数列
的通项公式;
(2)设
,求数列
前
项和为
.
![](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/11cff1e1d8d91d12b50456011af5c80b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feae21fc8f5d7d933ba31ad3e2682dc8.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
2019-12-28更新
|
447次组卷
|
5卷引用:湖南省怀化市2017-2018学年高三上学期博览联考数学(理)试题
名校
解题方法
5 . 已知数列
的前
项和为
,且
.
(1)求数列
的通项公式;
(2)记集合
,
,若
中有3个元素,求
的取值范围;
(3)是否存在等差数列
,使得
对一切
都成立?若存在,求出
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/c3ddd6d99ad32dd7fdb1797d8cf94786.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad91fcb6a27d115bd1bb62ba641e733e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2430dcfadeee37488922e988191403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)是否存在等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376004d82428e313b38d8c823fb6413e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
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2020-07-17更新
|
259次组卷
|
3卷引用:湖南省沅陵县第一中学2021-2022学年高二下学期月考模拟数学试题
湖南省沅陵县第一中学2021-2022学年高二下学期月考模拟数学试题江苏省连云港市赣榆区2020届高三(6月份)高考数学仿真训练试题(已下线)秘籍07 数列-备战2022年高考数学抢分秘籍(新高考专用)
解题方法
6 . 设等差数列{an}的公差为d,前n项和为Sn,等比数列{bn}的公比为q,已知b1=a1,b2=2,q=d,S4=16.
(1)求数列{an},{bn}的通项公式;
(2)当d>1时,记
,求数列{cn}的前n项和Tn.
(1)求数列{an},{bn}的通项公式;
(2)当d>1时,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.png)
您最近一年使用:0次
2014·河北石家庄·一模
名校
解题方法
7 . 已知数列
是各项均为正数的等比数列,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c843f154b4a5b2e1061e73cfe08249.png)
(1)数列
的通项公式;
(2)设数列
满足
,求该数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c843f154b4a5b2e1061e73cfe08249.png)
(1)数列
![](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/180b8aa42066cf917a181129a3bd0916.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
2016-12-02更新
|
2804次组卷
|
6卷引用:【全国百强校】湖南省怀化三中2018-2019学年高二上学期期中考试理科数学试卷