1 . 已知数列
为等差数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbc08bca7e93773f195446620aa0e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c32e71e1803603989c788bd1e9bb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbc08bca7e93773f195446620aa0e5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-06-07更新
|
4667次组卷
|
7卷引用:【全国百强校】山东省济南外国语学校2019届高三12月月考数学(文)试题
2 . 已知
是公差为
的等差数列,
为数列
的前
项和,若
,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/61128ab996360a038e6e64d82fcba004.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/fca2cc2768794136c1e4da47d2f0873e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知数列
的前
项和为
,且满足
,
,则
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194463e3b011603ff59c0789bcb65c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a4bed93def467d3dc9e438806439fe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-03-07更新
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1009次组卷
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4卷引用:【全国百强校】山东省济南市历城第二中学2017-2018学年高二下学期阶段考试(6月月考)数学(文)试题
4 . 在等差数列
中,有
,则该数列的前
项之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25c8691941762abc67730ac225aa4f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5453184e251cfe787b5965cd38426962.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-03-05更新
|
1682次组卷
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3卷引用:山东省济南外国语学校、济南第一中学等四校2017-2018学年高二上学期期末考试数学(文)试题
名校
5 . 已知等差数列
的前
项和为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc4fc5bcdbe0620693442c864a0a028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359b048cd64e08ea535f840c39d718b5.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/b0064b7eadf41cc40d3f6167594f40c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc4fc5bcdbe0620693442c864a0a028.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-02-27更新
|
743次组卷
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3卷引用:【全国百强校】山东省济南第一中学2019届高三上学期期中考试数学(理)试题
名校
6 . 已知
为等差数列,
为其前
项和,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.png)
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ebd58b0f7af7233e5f3fe54efd7ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.png)
A.49 | B.91 | C.98 | D.182 |
您最近一年使用:0次
2018-01-20更新
|
1286次组卷
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9卷引用:山东省济南市第一中学2019-2020学年高三上学期期中数学试题
山东省济南市第一中学2019-2020学年高三上学期期中数学试题河南省安阳市2018届高三第一次模拟考试数学(理)试题河南省安阳市2018届高三第一次模拟考试数学(文)试题【全国百强校】河北省武邑中学2018届高三下学期第五次模拟考试数学(理)试题山东省济宁市鱼台县第一中学2020-2021学年高三上学期第一次月考(10月)数学试题(已下线)2021届高三数学新高考“8+4+4”小题狂练(20)江西省南昌市进贤县第一中学2021届高三第二次月考数学(理)试题(已下线)数学-2021年高考考前20天终极冲刺攻略(三)(新高考地区专用)【学科网名师堂】 (5月31日)河南省南阳市内乡县第三高级中学2021-2022学年高二上学期10月月考数学试题
名校
7 . 等差数列
的前
项和
,已知
,
,则
的值是( ).
![](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/ced4e381e8c3336848b8c436dbc584f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ba808c24aeae6a2f34b98ae5ec04ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194592cb77de8a597d5d64e1c85c3249.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-01-02更新
|
486次组卷
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3卷引用:山东省济南市2019-2020学年高二上学期期末数学试题
名校
8 . 设等差数列
的前
项和为
,点
在直线
上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e472ad6e7bf7a6a409a43d4ea9035e0.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/de05a8805fc00644a5b7f2dc19d903d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e472ad6e7bf7a6a409a43d4ea9035e0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-18更新
|
496次组卷
|
3卷引用:山东省济南外国语学校2018届高三12月考试数学(理)试题
名校
解题方法
9 . 数列
为等差数列,
是其前
项的和,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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940a152ab9f35deda440af23337c36ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceae81b8da5efccb5fe18a4356d99d9d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-11-27更新
|
506次组卷
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3卷引用:山东省莱芜市2018届高三上学期期中考试数学(理)试题
名校
10 . 等差数列
中,若
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9b5080aa2e9c889aac8e378d83dfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b08a8c9baca410ef1464caf7f522aa4a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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