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1 . 设
是公差不为0的等差数列
的前
项和,且
成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af90043b71cb2ab0f8f774aed9fad10c.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8aa010f7105f3ca426c8a34880abd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af90043b71cb2ab0f8f774aed9fad10c.png)
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2017-05-10更新
|
834次组卷
|
4卷引用:上海市杨浦高级中学2016-2017学年高三下学期开学考试数学试题
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2 . 记等差数列{an}的前n项和为Sn,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b943fc1f0c7b85edc5cddee33483360f.png)
,且A、B、C三点共线(该直线不过原点O),则S200=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b943fc1f0c7b85edc5cddee33483360f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743e74e9c52d1e732a260c685f11c309.png)
您最近一年使用:0次
2016-12-04更新
|
921次组卷
|
8卷引用:上海市上海理工大附中2015-2016学年高二上学期第二次月考数学试题
上海市上海理工大附中2015-2016学年高二上学期第二次月考数学试题2015-2016学年湖北省黄冈中学高二上第一次周测数学试卷上海市曹杨二中2016-2017学年高二上学期开学摸底考试数学试题上海市七宝中学2020-2021学年高二上学期10月月考数学试题(已下线)第13讲 向量的应用(讲义)-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)(已下线)专题四 等差数列的前n项和-2020-2021学年高中数学专题题型精讲精练(2019人教B版选择性必修第三册)(已下线)5.2.2 等差数列的前n项和(课后作业)-2020-2021学年高中数学同步备课学案(2019人教B版选择性必修第三册)陕西省铜川市耀州中学2021-2022学年高二上学期第一次月考数学试题
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解题方法
3 . 已知不同的三点
在一条直线上,且
,则等差数列
的前2016项的和等于________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2467ae513b2b79387a6840dd334e953a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
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4 . 设公差不为零的等差数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7237e33b137b09243296f2b87dd4e239.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/124b59a767019801efd91cab0b277113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7237e33b137b09243296f2b87dd4e239.png)
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5 . 若
、
、
这三个的数字可适当排序后成为等差数列,也可适当排序后成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fcb8bb3febd7d44cc2460d6e806a77.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d3b969cecfebfa770f2d15ffe66ceb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fcb8bb3febd7d44cc2460d6e806a77.png)
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6 . 已知数列
的前
项和为
,
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________
![](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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e0e47eaf5d7c06a0aca950850c4a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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7 . 已知数列
是首项为
,公差为
的等差数列,若数列
是等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5091b1ef6c1389b42f15751354c901d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dddfd8cc957c04653b4f6e281eed612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
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8 . 定义
为向量
到向量
的一个矩阵变换,其中
是坐标原点,已知
,则
的坐标为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa3d1ae4575bb04938e975ac4b7d0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875a02f32e9bb0003f6e10b80f932219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eddb6c374450e4a538416b04fd2a108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1d3021dcb8ef1c79f4fddeb4496105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28135963f2bffcb7814aa8c784b8f5d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc8a9959e2676ff1bb47f78dfbe249a.png)
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9 . 已知数列{an}的前n项和Sn=(﹣1)n﹣1•n,若对任意的正整数n,有(an+1﹣p)(an﹣p)<0恒成立,则实数p的取值范围是_____ .
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10 . 等差数列
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.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/d1928c254cfada1f75a5cd1e34db5a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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