1 . 某停车场在统计停车数量时数据不小心丢失一个,其余六个数据分别是10,8,8,11,16,8,若这组数据的平均数、中位数、众数成等差数列,则丢失数据的所有可能值的和为( )
A.21 | B.24 | C.27 | D.32 |
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2 . 已知在单调递增的等差数列
中,
与
的等差中项为8,且
,则
的公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163546e57d9e8002c7111a2f11de39df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.5 | B.4 | C.3 | D.2 |
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解题方法
3 . 在
中,内角A,B,C所对应的边分别为a,b,c.
(1)若
,
,求角A的值;
(2)若
,且b是a和
的等差中项,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37bbd6940063ebe81e02f41d34c86cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eebf70d9224a4c8d150acb0619e1750a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f26ae0e31513d85924fd32aca9b9a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e563e032dfdef69b0f357060c27bd4.png)
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解题方法
4 . 已知数列
的前
项和为
,且数列
满足
.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de29b6882355a644d96a91dfed1b9f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5170584604571b5e1afd5ece941e2e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7bf78468ca801ef305ce4f76986da1.png)
A.9 | B.10 | C.17 | D.19 |
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名校
解题方法
5 . 已知等比数列
的首项
,前
项和为
,且
成等差数列,则( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bb50c6135bb973f13d556a888bdf04.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-10-28更新
|
1052次组卷
|
6卷引用:安徽省皖东十校联盟2024届高三上学期第三次月考数学试题
安徽省皖东十校联盟2024届高三上学期第三次月考数学试题湖北省荆州市沙市中学2024届高三上学期10月月考数学试题重庆市巴南区重庆市实验中学校2024届高三上学期期中数学试题(已下线)模块一 专题6 数列(2)(人教A)黑龙江省大兴安岭实验中学(东校区)2024届高三上学期11月月考数学试题(已下线)黄金卷03
6 . 已知数列
的前
项和为
,请从以下三个条件中选择一个完成解答.
①数列
是首项为2的单调递减的等比数列,且
成等差数列;
②
;
③
.
(1)求数列
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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbbed96d1841fe2bf7819923f9e3163.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffb167b464b4f825d77a8c8e0d4a015.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fd253b7015f3d1654bbdcb47a6b150.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127a77177b51f3b377f467b148479078.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
名校
7 . 已知首项为
,公比为
的等比数列
,其前
项和为
,
,且
,
,
成等差数列,记
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c40980226328591a49bf85b56b9562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02b512e23eadd2810ab21e2e993b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3272ce4d31d66c1d408225b997e3a73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2540c7bc6f571426c23ddfb203ce2700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
A.公比![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2023-05-19更新
|
588次组卷
|
2卷引用:安徽省定远中学2023届高三下学期高考冲刺卷(二)数学试卷
名校
8 . 已知等差数列
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84b1624c2c22f591a4156ac83575318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6225dab6cc57a6fccc1fa30572136013.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-06更新
|
1198次组卷
|
8卷引用:安徽省蚌埠市2023届高三四模数学试题
安徽省蚌埠市2023届高三四模数学试题广东省深圳市福田区红岭中学2024届高三上学期第二次统考数学试题(已下线)第02讲 等差数列及其前n项和(十大题型)(讲义)-1(已下线)专题6.1 等差数列及其前n项和【九大题型】黑龙江省哈尔滨市第四中学校2022-2023学年高二下学期期中数学试题(已下线)4.2 等差数列(1)(已下线)第02讲 4.2.1等差数列的概念(1)(已下线)4.2.1 等差数列的概念(8大题型)精练-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第二册)
名校
解题方法
9 . 在
中,内角A,B,C所对的边分别为a,b,c,且
.
(1)求B;
(2)若
成等差数列,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ceb1caab2011ade50b2a89e2878f7dd.png)
(1)求B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2585c13e8bf6bd8193d477d2481cb9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
10 . 已知数列
是等差数列,
是等比数列,且
,
,
成等差数列,则
( )
![](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/dc0c18a634fd064d42ff25ff5120d70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4872123a03862e9dee3110a8a9f28f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15101c1be29825b3ebb9295c096e8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063c860542a2e782dec27de76df545d4.png)
A.![]() | B.![]() | C.2 | D.4 |
您最近一年使用:0次