1 . 设数列
的前n项和为
,前n项积为
,若
,则
=___________ .
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b90c3f0930d92386d06690f78bcaed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2021-11-06更新
|
403次组卷
|
5卷引用:河南省2021-2022学年高二上学期阶段性测试文科数学试题(一)
解题方法
2 . 已知数列
的前
项和为
,若
(
为非零常数),且
,若
,则
的前
项和为___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.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/5c8e678cb4e4bdee7f87374cb5132cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d836a00b5e5fc994817d846097f42321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7edf8285e5dcc6bdbdfd9fc01a4a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
您最近一年使用:0次
名校
解题方法
3 . 数列
的前
项和
,
.设
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a8462c07c0143853c1bec52084360e.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/5b75dbb20178da2eec9ff11a9c74e841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f680eaac32cf123e87e3a73730cedc0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a8462c07c0143853c1bec52084360e.png)
您最近一年使用:0次
2021-10-25更新
|
592次组卷
|
3卷引用:河南省郑州市郊县2020-2021学年高二上学期期中考试数学(文)试题
河南省郑州市郊县2020-2021学年高二上学期期中考试数学(文)试题河南省郑州市第十一中学2022-2023学年高三上学期1月份线上考试理科数学试题(已下线)专题28 数列求和的类型和方法-备战2022年高考数学一轮复习一网打尽之重点难点突破
4 . 已知
为数列
的前
项和,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da99dc00e110946c69cd34d90a65d84.png)
___________ .
![](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/374ebd3cdd3c0474b935dde11055ac10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da99dc00e110946c69cd34d90a65d84.png)
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2021-10-18更新
|
547次组卷
|
2卷引用:河南省新郑市2021-2022学年高二上学期第一次阶段性检测数学(文)试题
名校
5 . 已知数列
,
均为等比数列,前
项和分别为
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba6631f75636aeafa648d99729aa5b6.png)
___________ .
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59eee9b5f28ae2146ae663148664fb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba6631f75636aeafa648d99729aa5b6.png)
您最近一年使用:0次
2021-10-15更新
|
765次组卷
|
3卷引用:河南省联考2021-2022学年高三核心模拟卷(上)文科数学(三)
6 . 已知数列
的前
项和为
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f6a7efd39b832f421c3706b45f95c7.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.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/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f6a7efd39b832f421c3706b45f95c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd048fe3fbd6b0623f146a0ef9021e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
您最近一年使用:0次
2021-10-15更新
|
357次组卷
|
3卷引用:河南省联考2021-2022学年高三核心模拟卷(上)文科数学(四)
名校
解题方法
7 . 已知数列
的前n项和为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
________ .
![](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/0f294f52428fa830db9294d33561cd70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
您最近一年使用:0次
2021-09-10更新
|
780次组卷
|
11卷引用:河南省开封市五县2021-2022学年高二上学期期中联考数学(文)试题
河南省开封市五县2021-2022学年高二上学期期中联考数学(文)试题河南省开封市五县2021-2022学年高二上学期期中联考数学(文)试题河北省邢台市2022届高三上学期入学考试数学试题重庆市2022届高三上学期入学考试数学试题重庆市“好教育联盟”2022届高三上学期9月入学诊断数学试题四川省部分学校2021-2022学年高三上学期开学考试数学(理科)试题四川省部分学校2021-2022学年高三上学期开学摸底联考数学试题(理科)广西贺州市钟山中学2021-2022学年高二上学期9月月考数学试题湖北省随州市广水市实验高级中学等2022届高三上学期联考数学试题辽宁省沈阳市第三十一中学2022届高三上学期10月份月考数学试题内蒙古巴彦淖尔市衡越实验中学2022-2023学年高二上学期一诊考试理科数学试卷
8 . 将正整数排成如图:
![](https://img.xkw.com/dksih/QBM/2021/4/27/2708893356777472/2786237410312192/STEM/3340a7a0-c53e-4420-88cb-ae3ec26e1a56.png?resizew=204)
用
表示第
行第
列的那个整数,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a0ffd97e63546f5181037e416a46aa.png)
______ .
![](https://img.xkw.com/dksih/QBM/2021/4/27/2708893356777472/2786237410312192/STEM/3340a7a0-c53e-4420-88cb-ae3ec26e1a56.png?resizew=204)
用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d7d9dd26c9feab447266456e8a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a0ffd97e63546f5181037e416a46aa.png)
您最近一年使用:0次
2021-08-14更新
|
201次组卷
|
2卷引用:河南省南阳市2020-2021学年高二下学期期中数学试题
解题方法
9 . 南宋著名数学家杨辉在1261年所著的《详解九章算法》中首次提出“杨辉三角”,如图所示,这是数学史上的一个伟大的成就在“杨辉三角”中,已知每一行的数字之和构成的数列为等比数列,设该数列前
项和为
,若数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.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/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573d4203bf0e18deb2cba14bc6965a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac326f9f4ad78d0053c113f823ea6d60.png)
![](https://img.xkw.com/dksih/QBM/2021/6/25/2750756621524992/2781502843240448/STEM/40265eb4cbc54cb78fa4f52225a3ac25.png?resizew=126)
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10 . 任意正整数的所有正约数之和可按如下方法得到:因为
,所以36的所有正约数之和为
;因为
,所以135的所有正约数之和为
.参照上述方法,可求得1000的所有正约数之和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba917eaadfb2a716b87671082c810801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58511f2861f88793cd2c2227b87456d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d43b7fdd2d458de86283b01af974ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10b874886b5d51e9a69ac91bc53507a.png)
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2021-07-09更新
|
171次组卷
|
3卷引用:河南省天一大联考2020-2021学年高二下学期期中考试文科数学试题