名校
1 . 已知等差数列
的前n项和为Sn,若S2=8,
,则a1等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489b9ce1996ce5101624f75a757f72fd.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2020-11-15更新
|
1022次组卷
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5卷引用:云南省曲靖市沾益区第四中学2020-2021学年高二5月月考数学(文)试题
2023·全国·模拟预测
名校
2 . 已知等差数列
满足
,
,数列
满足
.记数列
的前
项和为
,则使
的
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df7a968032a8f8b1a053978b471b806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8cb8fe83b2b4f73317462f38de4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1517c9c8dbd06b6dce86af3b37dd7c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/937228faf3b035ce9fb607ec96f707f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 在等差数列
中,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5905a1755bf66784021797d628751c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ff804e08a81f2e456622972f18f03b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5905a1755bf66784021797d628751c.png)
A.38 | B.39 | C.41 | D.42 |
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2018-05-01更新
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2294次组卷
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4 . 在等差数列
中,若
,
,则公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7abe2dbf91b745e81aa97bee35b0bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.![]() | B.1 | C.![]() | D.2 |
您最近一年使用:0次
2022-04-29更新
|
337次组卷
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3卷引用:云南省临沧市沧源佤族自治县民族中学2023-2024学年高二上学期期末模拟数学试题
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5 . 已知等差数列
,
,则公差d等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d966abe88a393715d952aef88b01ec7.png)
A.![]() | B.![]() | C.3 | D.-3 |
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2021-04-10更新
|
451次组卷
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5卷引用:云南省楚雄市第一中学2022-2023学年高二年级上学期月考数学试题
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6 . 已知
是公差为2的等差数列,且
,
,
成等比数列,则
( )
![](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/0e84c30444f13d37ada78285dc4f83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d868ad8750eefd545a4344594dd982d5.png)
A.1 | B.![]() | C.25 | D.49 |
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2020-11-24更新
|
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3卷引用:云南省丽江市第一高级中学2020-2021学年高二12月月考数学试题
云南省丽江市第一高级中学2020-2021学年高二12月月考数学试题天一大联考(河北广东全国新高考)2020—2021 学年高中毕业班阶段性测试(二)(已下线)重难点 01 数列-2021年高考数学(文)【热点·重点·难点】专练
7 . 在等差数列
中,
,公差
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.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/09f2572192cc7ca046e9a3155ef3e56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.6 | B.8 | C.7 | D.9 |
您最近一年使用:0次
名校
8 . 等差数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e80ceaa73a3a79a8b5328043600eb31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a315fa5bb5e4a79330655c15c1053b8d.png)
A.1 | B.2 | C.3 | D.4 |
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2020-02-16更新
|
722次组卷
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2卷引用:云南省玉溪市红塔区第一中学2019-2020学年高二上学期期末数学(理)试题
解题方法
9 . 等差数列
中,
为其前
项和,且
,则
最大时
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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0cea429112f55c8321c74f545a3e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.7 | B.10 | C.13 | D.20 |
您最近一年使用:0次
2020-05-26更新
|
605次组卷
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3卷引用:云南省曲靖市沾益区第四中学2020-2021学年高二5月月考数学(理)试题
云南省曲靖市沾益区第四中学2020-2021学年高二5月月考数学(理)试题山西省忻州实验中学2019-2020学年高二下学期第一次月考数学试题(已下线)专题02 等差数列及前n项和(专题测试)-2020-2021学年高二数学重难点手册(数列篇,人教A版2019选择性必修第二册)
名校
10 . 在等差数列
中,已知
,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d77060931748cee8c21b43d15033b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f617b2a3d26346cdae3c01a545089c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bbae9353140c2235610852d04a9a3f.png)
A.32 | B.![]() | C.35 | D.![]() |
您最近一年使用:0次
2020-11-02更新
|
517次组卷
|
4卷引用:云南省楚雄市天人中学2022-2023学年高二上学期12月学习效果监测数学试题