名校
1 . 在等比数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d3ef3ca8a51adc313b691c1733d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d868ad8750eefd545a4344594dd982d5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知
是数列
的前
项和,若
是等差数列,且
,
.
(1)求
的值;
(2)
为何值时,
的值最小?
![](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/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738dc67ac3b150252a964d1ffe3dfa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faaad3a38fe590d5bd18f042f14b2a39.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194592cb77de8a597d5d64e1c85c3249.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c544248631c398017c338edf4fcb69.png)
您最近一年使用:0次
解题方法
3 . 已知
为等比数列
的前
项和,若
,则
( )
![](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/e05bd88eee7c59a35d39ab49113a369a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c9171d9a4070be1a1c1b3027a95ab4.png)
A.3 | B.6 | C.8 | D.9 |
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4 . 若数列
满足
,
,则
( )
![](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/0f8ca0d24cf1c157b0485c94c2d565d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
A.![]() | B.1 | C.2 | D.3 |
您最近一年使用:0次
5 . 在等比数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ced564150c49c1afbe3e23cbd540ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d477996ec61de5f353e016332f77e2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
A.![]() | B.![]() | C.3 | D.4 |
您最近一年使用:0次
2024-04-17更新
|
209次组卷
|
2卷引用:安徽省亳州市涡阳县蔚华中学2023-2024学年高二下学期第一次月考(4月)数学试题
6 . 在等差数列
中,已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37393a73bc9c1006711e3ef5b853453a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
A.-1 | B.0 | C.1 | D.2 |
您最近一年使用:0次
名校
7 . 已知等比数列
的前
项积为
,公比
,则( )
![](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/cb8957dd55739c6ad39de9b40759b19a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ae25f02f4f838cde98bd399a8c4d90.png)
A.![]() | B.![]() |
C.当![]() ![]() | D.当![]() ![]() |
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2024-02-28更新
|
428次组卷
|
5卷引用:安徽省亳州市涡阳县蔚华中学2023-2024学年高二下学期第一次月考(4月)数学试题
8 . 已知等差数列
是递增数列,其前
项和为
,且满足
,当
时,实数
的最小值为( )
![](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/114dcd6fe90ea47ab5b1716bd3a9009f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005b4e99ab406b0a80b68debe8bd2913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.10 | B.11 | C.20 | D.21 |
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2023-12-31更新
|
591次组卷
|
5卷引用:安徽省亳州市涡阳县蔚华中学2023-2024学年高二下学期第一次月考(4月)数学试题
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名校
解题方法
9 . 已知数列
的前
项和为
,则数列
的通项公式为______ .
![](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/cedd33724a22a879e48debc3dd08e360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2023-12-26更新
|
854次组卷
|
4卷引用:安徽省亳州市涡阳县蔚华中学2023-2024学年高二上学期第三次月考数学试题
安徽省亳州市涡阳县蔚华中学2023-2024学年高二上学期第三次月考数学试题陕西省榆林市五校联考2023-2024学年高二上学期12月月考数学试题(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)广东省中山市中山纪念中学2024届高三上学期第一次调研数学试题
名校
解题方法
10 . 已知递增的等差数列
和等比数列
满足
.
(1)求
和
的通项公式;
(2)若
,求
的前
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/fb9532b9fe3a6a6805093c96d73752db.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d44ddab6e0c60119be69985ae7fa65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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
2023-11-08更新
|
1464次组卷
|
5卷引用:安徽省亳州市涡阳县蔚华中学2023-2024学年高二下学期第一次月考(4月)数学试题
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