名校
解题方法
1 . 已知
是各项均为正数的数列
的前
项和,
,
,若
对
恒成立,则实数
的最大值为( )
![](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/085efaa1ddf1c9baceccc388032e7350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4822fdc0d230a473355e92a2ed9be58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35a1abae356c805cbed778c353e05fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ec09a5b5fd94c1dd994a759907ef1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.16 | C.![]() | D.32 |
您最近一年使用:0次
名校
解题方法
2 . 已知数列
的前
项和为
,且
,首项为1的正项数列
满足
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e346fc67bc995e73ddea613683910c5.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880d168a12a8c7e5aaad255312cd56a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a203b4f9bfa5337384d98043797b9209.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/1e346fc67bc995e73ddea613683910c5.png)
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2023-05-26更新
|
397次组卷
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3卷引用:华大新高考联盟(西工大附中、西安铁一中、郑州外国语学校、郑州一中、合肥一中、八中等)2023届高三高考预测理科数学试题
名校
3 . 在各项均为正数的等比数列
中,
,
,则使得
成立的n的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca707ca3374353d0b5b675c12469dc7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5eb7829ac5c810ff426f16a88b7dd19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25809c4ad8f07e80b10fdb5b40d6dfae.png)
A.7 | B.8 | C.9 | D.10 |
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2023-05-24更新
|
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4卷引用:陕西省安康中学2023届高三下学期5月学业质量检测(二)理科数学试题
陕西省安康中学2023届高三下学期5月学业质量检测(二)理科数学试题陕西省安康中学2023届高三下学期5月学业质量检测(二)文科数学试题(已下线)第03讲 等比数列及其前n项和(练习)(已下线)4.3.1等比数列的概念(第2课时)(分层作业)(4种题型)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)
4 . 已知等比数列
满足
,则
的前
项和( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5af02a3becbcceff68caa7611e0a096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
A.1024 | B.512 | C.1023 | D.5 |
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5 . 已知等比数列
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674ac7f72f1f6fc7078c0e8e8f8b9787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7bf78468ca801ef305ce4f76986da1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知等比数列
的前
项和为
,若
,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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6bdfaa299fb6a90b08400c21349063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8e94f53122a401c305cca35c6309be.png)
A.41 | B.45 | C.36 | D.43 |
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2023-05-10更新
|
800次组卷
|
3卷引用:陕西省榆林市2023届高三四模文科数学试题
名校
解题方法
7 . 在递增等比数列
中,其前
项和为
,且
是
和
的等差中项,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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8bed9dea293924486b60a926c8ec6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce44cdc798888e0920e0441deadd255.png)
A.28 | B.20 | C.18 | D.12 |
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2023-05-10更新
|
1444次组卷
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9卷引用:陕西省铜川市2024届高三第二次质量检测数学(文科)试题
8 . 已知正项等比数列
的前
项和为
,且
,
(1)求
的公比;
(2)若
,求数列
的前
项和
.
![](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/3778270fd63ecd72a476adc4051aa581.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3c2d3c30c8b4f3c0073c24abceae78.png)
![](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)
您最近一年使用:0次
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9 . 已知等比数列
的前
项和为
,则下列结论中一定成立的是( )
![](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)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
2023-05-07更新
|
1050次组卷
|
5卷引用:陕西省咸阳市实验中学2024届高三下学期适应训练(一)数学(文)试题
名校
解题方法
10 . 已知数列
、
,满足
,
,
.
(1)求数列
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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14444726821a8444c4ecc5ff6eb60d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77eb4367983d955a4f070045d1290c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c64b39bcce3a2674cf2a9cadcf09a.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45114dee5d6331a41851fafa553c5d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375ec49c4e7fee0753a6121c800cae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2023-05-06更新
|
684次组卷
|
5卷引用:陕西省西安市长安区2023届高三一模理科数学试题