名校
解题方法
1 . 等比数列
的首项为
,公比为
,前
项和为
,则当
时,
的最大值与最小值之和为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.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/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5aa055773974eb8f4f4643049a30242.png)
您最近一年使用:0次
2020-12-07更新
|
592次组卷
|
5卷引用:上海市金山中学2020-2021学年高二下学期第一次月考数学试题
上海市金山中学2020-2021学年高二下学期第一次月考数学试题(已下线)4.2 等比数列的前n项和(第2课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020选择性必修第一册)湖南省长沙市一中2017届高三高考模拟试卷(二)数学(文)试题吉林省吉林市吉林第一中学2020-2021学年高二上学期阶段性考试数学试题天津市耀华中学2022-2023学年高二上学期期末数学试题
2 . 设数列
的前
项和为
,若存在实数
,使得对任意的
,都有
,则称数列
为“
数列”,则以下
为“
数列”的是______ .
①
是等差数列,且
,公差
;
②若
是等比数列,且公比
满足
;
③若
;
④若
,
.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a41d1247b54c4d34c6c4204c3709412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c679a17000041b4e796a61bfb0a919e5.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d71e67e7f2327e81828dc6eb15f52a0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060c59270bbe1ada98caf61b1591169e.png)
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2020-12-04更新
|
361次组卷
|
5卷引用:上海市嘉定区第一中学2020-2021学年高二上学期第一阶段考试数学试题
上海市嘉定区第一中学2020-2021学年高二上学期第一阶段考试数学试题(已下线)4.2 等比数列的前n项和(第2课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020选择性必修第一册)安徽省合肥市第一中学2020届高三下学期最后一卷文科数学试题(已下线)第六单元 数列(A卷 基础过关检测)-2021年高考数学(文)一轮复习单元滚动双测卷湖南省邵阳市邵东市第一中学2022-2023学年高二上学期期中数学试题
3 . 设数列
前项和为
,若
,且对任意正整数
,都有
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.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/b9dfb7d4ce395cf2fe86aebf9728a646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0877194ab8760f54c35527177b03ff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47502da290030106eb457bdd112509df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.png)
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2020-12-03更新
|
116次组卷
|
2卷引用:上海市普陀区2021届高三上学期(11月)教学调研测试数学试题
名校
解题方法
4 . 平面直角坐标系中,已知点
,
,且
,当
时,点
无限趋近于点
,则点
的坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c82d2584191977f8d9dcdcb1d13cd6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd34680847b9bb2501a3ff0f488d5e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29be3b3d5cba27d7734d20afc0bff79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d154b00d2363a51a93657d941f07ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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5 . 已知数列
是无穷等比数列,其前n项和是
,若
,
,则
的值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3939cb6a7baabdf0060ea4533ae7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752cf42c1043745a337b6c0394709c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58abe92020722722506c7b12c7879ac5.png)
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名校
解题方法
6 . 在
的二项展开式中,若
是所有二项式系数的和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80199ab7a5b8524c272365d92336aaed.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93daf697f42b3b3ad9fb5e2322d44a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80199ab7a5b8524c272365d92336aaed.png)
您最近一年使用:0次
名校
解题方法
7 . 设
是定义在
上的函数,若
,且对任意
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb08fa4a753b9dae37f3347d3b3dfdba.png)
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1ebd3d7575930fa453206a1695fb3e.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0326ecdf68be22c8868aeffe5f8ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb08fa4a753b9dae37f3347d3b3dfdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38152e097b7b074730b2048dae6bc17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/687a97d9210a57fa8fd205a8ca2b9684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1ebd3d7575930fa453206a1695fb3e.png)
您最近一年使用:0次
2020-10-30更新
|
605次组卷
|
2卷引用:上海市南洋模范中学2021届高三上学期9月月考数学试题
名校
8 . 已知无穷等比数列
,公比
满足
,
,求实数
的取值范围________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92209aa6bd22398fccaa8f4119e0c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e19964ed3a265d5d4761c037542c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
9 . 设等比数列
的通项公式为
,前n项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a34ed64959855597658e410de08886f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bed288facef3f7378341b9a593aef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
您最近一年使用:0次
名校
解题方法
10 . 已知数列
中,
,等比数列
的公比
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b79ae7087939e8685dbfb46ea02459.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb8e5d4462b67269c3ed71528c94aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131b09109b052957d1d0945defd73e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c968ef8f37cbc55d57380015e0229f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b79ae7087939e8685dbfb46ea02459.png)
您最近一年使用:0次
2020-08-19更新
|
621次组卷
|
7卷引用:上海市2018-2019学年高三上学期12月仿真数学试题
上海市2018-2019学年高三上学期12月仿真数学试题广东省深圳市福田区耀华实验学校2022-2023学年高二下学期3月月考数学试题苏教版高中数学 高三二轮 专题20 数列的通项与求和 测试2019届高考数学(理)全程训练:天天练23 等比数列【市级联考】山东省枣庄市2018-2019学年高二上学期期末第二学段模块考试数学试题(已下线)测试卷38 数列(B)-2021届高考数学一轮复习(文理通用)单元过关测试卷(已下线)考点6-4 数列前n项和综合应用(文理)