1 . 已知
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c47bb82b5ef750f5d75e4c354cecd5.png)
(1)求向量
的坐标,并用
表示
用
表示
;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d45a38d71459c14fa135a163615d041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dd0445a82465bb0fccaa012f2e9c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c47bb82b5ef750f5d75e4c354cecd5.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf785aa19bb8f014ec8b396877c2284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd034eda9b52517d3b7b1dd6cc153bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46c63acca5b89595f72462f55d9d94c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd034eda9b52517d3b7b1dd6cc153bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff455c8edd6edf1a55ebb5e3235162da.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47d52e400c1c11dca3832df5661f36f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
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名校
2 . 已知正项数列
的前n项和为
,对于任意正整数m、n及正常数q,当
时,
恒成立,若存在常数
,使得
为等差数列,则常数c的值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4af60e70f570ec61b8170214977bc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa1f84422606b095f31d28de57c6ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff64b05d758c9a62d64a7f7d2a3a8e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167e88bdf4608388f0bb981e78119477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6432a5e3fed32b6a725c6b4fdd746303.png)
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2020-01-10更新
|
560次组卷
|
2卷引用:2018年上海市建平中学高考三模数学试题
3 . 数列
为等比数列,
是等比数列
的前
项和,已知
,则
,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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c33daee1f0d2582651f1cb2632063a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53b4b54f6be7839de8baff7af19a4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27182444d3da4003680f07ec299087c.png)
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4 . 在平面直角坐标系中,已知
,
.
(1)若
,求
的值;
(2)若
,求
的坐标;
(3)若已知
,
,若函数
,
的图象与函数
的图象有二个不同的交点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee761a21fb9adf28be731a9b04e9708c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73c30866bbeec6033c7bde3ab75fde2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a756acca98cf1addbb5f8114a1ed004e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22034385f3c155410cc757c7f2618fc3.png)
(3)若已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d512dde62e7afa7a360017e8f8dd4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c42c063a2610bd4c2f768d62aa23af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac7d9af4aef89939459d98f0833936b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
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5 . 如图,一质点
从原点
出发沿向量
到达点
,再沿
轴正方向从点
前进
到达点
,再沿
的方向从点
前进
达到点
,再沿
轴正方向从点
前进
达到点
,
,这样无限前进下去,则质点
达到的点的坐标是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/aea82d26-ee01-4c63-97a5-c48565d33809.png?resizew=180)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429033fc78f59859f69857e171d7423a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366596137b12cbfe42c0e94fdf7ce6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99198f470bfb3066e5821184426ccc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8c162ee7c75aa5f5cbd196b18cc239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee065106d26c2b0aba3fec48c4536f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f782d70309802445202487eee751cbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/aea82d26-ee01-4c63-97a5-c48565d33809.png?resizew=180)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 若无穷等比数列
的各项和为
,则
的取值范围是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
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7 . 化小数为最简分数:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf151fe47faef4cd86bcd5d2e59b4467.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf151fe47faef4cd86bcd5d2e59b4467.png)
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8 . 数列
的前
项和为
,若对任意
,都有
,则数列
的前
项和为________
![](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/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afb8aa768a6f76c0c94d9f83263f9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e575361303595eb25710553337bb2708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2020-01-08更新
|
173次组卷
|
3卷引用:上海市上海师范大学附属中学2015-2016学年高一下学期期末数学试题
名校
9 . 已知等比数列
的前
项和为
,则下列一定成立的是( )
![](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)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
2020-01-07更新
|
382次组卷
|
3卷引用:上海市华东师范大学第二附属中学2016-2017学年高一下学期期末数学试题
(已下线)上海市华东师范大学第二附属中学2016-2017学年高一下学期期末数学试题上海市闵行区七宝中学2016-2017学年高三下学期开学考试数学试题湖北省襄阳市第一中学2019-2020学年高二下学期2月月考数学试题
10 . 已知等比数列
的公比为q其前n项和为
,若集合
,则M等于( )
![](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/c0372fdda343e36e3f4607b4af4e6cf1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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