1 . 已知数列
的首项
.
(1)求
;
(2)记
,设数列
的前
项和为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3591f41fdd03dd1caeb0068ba8290018.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca6c9665ca3efcfa9c3d0f7181ff49.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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4卷引用:江西省上饶市民校考试联盟2023届高三上学期阶段测试(二)数学(文)试题
2 . 已知数列
的前
项和为
,且
.
(1)求证;数列
是等比数列;
(2)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/c9d416aa2d2e0415f6b3a663ccc3772e.png)
(1)求证;数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0efd37ab066a4d3490dc8fbd4fc820.png)
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3 . 记数列{an}的前n项积为Tn,且
.
(1)证明:数列
是等比数列;
(2)求数列
的前n项和Sn.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71635fe1b18f0966a9a7375cdd0f23d4.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fe49fff4ebf3dbe0a4a408179ffccf.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd6e1f31fc72e242fde01540f11042f.png)
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8卷引用:江西省丰城中学2023届高三(尖子班、重点班)上学期数学(文)期中复习试题
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名校
解题方法
4 . 在数列
中,
,数列
的前
项和为
.
(1)证明:数列
是等比数列,并求数列
的通项公式;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445a1b3b548b246bbb67b33fd034821b.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/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483eb4433fee05a5810a276433b1742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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3卷引用:江西省九江市柴桑区一中2020-2021学年高二上学期数学(理)期中试题
5 . 已知数列
满足
,
.
(1)证明:
是等比数列;
(2)设
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ae8af1b4dfc31c317fcbe291d28b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9860dce2f7660e7104e14d2d0b6f305.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faae65c4360c5400629f89d52a5cfcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e290dadb8974055efddd5f7d61bf188.png)
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6 . 已知数列
的前
项和为
,在①
,②
这两个条件中任选一个,并作答.
(1)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/66861fad4a49ff6eaedfe4828dbe455e.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9610a946846067376e97a31367da9949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b74df7b8a0bb24399922331dbbed43d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8497f33b535453cf984bc3526f0a204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bde034b0bb6767f923526db8a387c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66861fad4a49ff6eaedfe4828dbe455e.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
7 . 设数列
满足
,
.
(1)求证:
为等比数列,并求
的通项公式;
(2)若
,求数列
的前
项和
.
![](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/dd15831d2b2ebc3e763a279f315cb898.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483eb4433fee05a5810a276433b1742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08514861b9575c73c46e2619e86e2ff8.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)
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6卷引用:江西省名校2022届高三5月模拟冲刺数学(理)试题
江西省名校2022届高三5月模拟冲刺数学(理)试题2022年普通高等学校招生全国统一考试理科数学(黑卷)试题(已下线)专题26 数列的通项公式-6(已下线)重难点05五种数列通项求法-3【押题金卷】2022年普通高等学校招生全国统一考试理科数学试卷(B卷)(已下线)专题02 盘点求数列通项公式的六种方法-2
8 . 已知正项数列
的前n项和为
,
,且
.
(1)求
的通项公式;
(2)若
,求数列
的前n项和
.
![](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/05208bb4ab07cbbac0b0c6390e155d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8aa24f37486c504aeeaa7f6a1f4b85.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add02169a8f58417880df4e302a7c498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
解题方法
9 . 已知数列
的前n项和为
,且
.
(1)求数列
的通项公式;
(2)若数列
满足
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3266ef115603b67c55fb9409ac2e16.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bca4d8baefff58cd6358e80e397967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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解题方法
10 . 已知数列
的前
项和为
,且
.
(1)证明:
为等比数列.
(2)若
,求数列
的前
项和
.
![](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/da50e2ca8ac5634403345a58717bb539.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eeed71f97b988162e0c2d201c1bea0d.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)
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2022-04-26更新
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8卷引用:江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(文)试题
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