解题方法
1 . 已知等差数列
满足
,
,数列
的前
项和
满足
.
(1)求数列
和
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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a316124e688e76d6f330ffbea49d427d.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/c6d42564f141fe8093fc409600a33ba1.png)
(1)求数列
![](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/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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解题方法
2 . 十九世纪下半叶,集合论的创立奠定了现代数学的基础.著名的“康托三分集”是数学理性思维的构造产物,具有典型的分形特征,其操作过程如下:将闭区间[0,1]平均分为三段,去掉中间的区间段
,记为第一次操作;再将剩下的两个区间
分别平均分为三段,并各自去掉中间的区间段,记为第二次操作:…;如此这样.每次在上一次操作的基础上,将剩下的各个区间分别平均分为三段,同样各自去掉中间的区间段.操作过程不断地进行下去,以至无穷,剩下的区间集合即是“康托三分集”,若去掉的各区间长度之和不小于
,则需要操作的次数n的最小值为( )(参考数据:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77eb1dffe3f96eb87d2792adfab84822.png)
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137db77bfb4d89fb76b6c533122633ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410834d5ac53ba3e82dc38f2599c1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77eb1dffe3f96eb87d2792adfab84822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e5aecc7c32f46bc083030629cdd81a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知数列{
}为等差数列,
,
,数列{
}的前n项和为
,且满足
.
(1)求{
}和{
}的通项公式;
(2)若
,数列{
}的前n项和为
,且
对
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86cc1dbf9768a7f7a487517ea7224d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61d6a6b7579718b63724b734b9c1278.png)
(1)求{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89c08f1032d49b57607e3af5c2f294f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
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2022-06-03更新
|
3196次组卷
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9卷引用:湖南省长沙市长沙县第一中学2022届高三下学期押题卷4数学试题
湖南省长沙市长沙县第一中学2022届高三下学期押题卷4数学试题(已下线)专题27 数列求和-1辽宁省沈阳市辽中区第二高级中学2021-2022学年高二下学期期末考试数学试题(已下线)第06讲 第六章 数列综合测试(测)-2023年高考数学一轮复习讲练测(新教材新高考)(已下线)专题18 等差数列及其求和(讲义)-2023年高考数学一轮复习精讲精练宝典(新高考专用)(已下线)专题12 数列综合(已下线)第7讲 数列求和9种常见题型总结 (1)(已下线)模块四 专题2 期末重组综合练(辽宁)(高二人教B)广东省深圳市光明区光明中学2023-2024学年高二下学期期中考试数学试题
4 . 已知数列
满足
,
.
(1)证明:数列
为等比数列;
(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/91ced564150c49c1afbe3e23cbd540ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a0934b1bae45c55356aaa88831e85d.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5f5a6bbba20695f276d6416c0fc15c.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2022-05-26更新
|
1261次组卷
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5卷引用:湖南省永州市第一中学2021-2022学年高二下学期期末模拟数学试题
解题方法
5 . 已知等差数列
的前
项和为
,且
,
,公比为2的等比数列
满足
.
(1)求数列
、
的通项公式;
(2)求数列
的前
项和
,及使得
对
恒成立的最大正整数
.
![](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/a29f41cdc33626bd67bfff17b028acfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6278d3cc0086c7aab6ac20712c7d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9813a9a34a595f123a205e73d0490d49.png)
(1)求数列
![](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/aec4bdc2a6d4fc387dc621f0b5a268c5.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/362c0e995ae21202c6216d4debb2a6dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
解题方法
6 . 已知数列
的前n项和为
,
.
(1)求证:数列
为等比数列,并求数列
的通项公式;
(2)若
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c07d6d0c63061e09e36b5a2c74760b.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f75e87cdd8246a723b4f2b21351d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0f044dc82a12fd1c71872f2ac12d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-05-20更新
|
585次组卷
|
4卷引用:湖南省市(州)部分学校2022届高三下学期“一起考”大联考三模数学试题
7 . 设数列
的前
项和为
,已知
,
.
(1)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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8251ae667250fb36ce4c0d75228317.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e308f693a9aeaef3162a0c5b8eae098.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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2022-05-19更新
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1312次组卷
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3卷引用:湖南省多所学校2022届高三下学期高考仿真模拟数学试题
名校
解题方法
8 . 数列
为正项等比数列,且
;等差数列
的首项
,且
,
;记
,数列
的前
项和为
,
,
恒成立,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](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/2c336a008a94ec59b3cd0c54b269f1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f71d45130185df66b02bac8114e2e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b78297a65e7fad69635b19928ecc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12efc8605ecf77650b8cee30b691bccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8ecd35ed20a0a728930324ba957279.png)
A.2 | B.4 | C.6 | D.8 |
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解题方法
9 . 已知数列
为等比数列,其前n项的和为
.已知
,且
成等差数列.
(1)求数列
的通项公式;
(2)已知
,记
,若
对于
恒成立,求实数m的范围.
![](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/a341b761ce39128b0437f5be82fe79ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4792f3e2200a29f110dbc3eb85b9d962.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c1d02f1704af6b6ff4095ee3bae3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a487d65373ea1391d19c9e86c94490ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fad77e1c6c928f84a19e3f11c8923db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
您最近一年使用:0次
10 . 已知数列
是递增的等差数列,
,且
是
与
的等比中项.
(1)求数列
的通项公式;
(2)①
;②
;③
.
从上面三个条件中任选一个,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6278d3cc0086c7aab6ac20712c7d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38b77ab2b901824789bb27f27c09282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c0250dcb2a000f60f3e38e5c6fdb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
从上面三个条件中任选一个,求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2022-05-03更新
|
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2卷引用:湖南省衡阳市2022届高三下学期二模数学试题