名校
1 . 设
为等差数列
的前
项和,已知
,则
的值为( )
![](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/c153267d0f63a741ab4c54f99f2b9a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
A.5 | B.7 | C.9 | D.10 |
您最近一年使用:0次
2024-04-24更新
|
983次组卷
|
3卷引用:云南省昆明市云南师范大学附属中学2023-2024学年高二下学期教学测评月考(五)数学试题
解题方法
2 . 在等差数列
中,公差
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517f414f2011567d7fc143da0a7be7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.13 | B.14 | C.15 | D.16 |
您最近一年使用:0次
名校
解题方法
3 . 设
为等差数列
的前
项和,
,
,若数列
的前
项和为
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36183db0759eec0e108274d229fcd00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851af767ceae88ebc6dc8822ad49a99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfa3ced77ddba0c742b4c1de8ae9d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.8 | B.9 | C.10 | D.11 |
您最近一年使用:0次
名校
解题方法
4 . 月相是指天文学中对于地球上看到的月球被太阳照亮部分的称呼.1854年,爱尔兰学者在大英博物馆所藏的一块巴比伦泥板上发现了一个记录连续15天月相变化的数列,记为
,其将满月等分成240份,
(![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9612cb52aacd0b66fc1ba1297267c9c7.png)
且
)表示第
天月球被太阳照亮部分所占满月的份数.例如,第1天月球被太阳照亮部分占满月的
,即
;第15天为满月,即
.已知
的第1项到第5项是公比为
的等比数列,第5项到第15项是公差为
的等差数列,且q,d均为正整数,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9612cb52aacd0b66fc1ba1297267c9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99ee0c1e26488f4dd34fbe0c5a21734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00725492cf521a4277f03c364998a4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488f60de9f3ee1420838d8440e05d719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5bcf7bb1e8e79d97cde061b297c9080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.40 | B.80 | C.96 | D.112 |
您最近一年使用:0次
2024-01-18更新
|
454次组卷
|
4卷引用:云南省曲靖市第一中学2023-2024学年高二下学期第一次阶段性考试(3月月考)数学试题
云南省曲靖市第一中学2023-2024学年高二下学期第一次阶段性考试(3月月考)数学试题北京市丰台区2023-2024学年高二上学期期末练习数学试卷(已下线)1.3.1等比数列的概念(分层练习)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)重庆市九龙坡区重庆实验外国语学校2024届高三下学期入学测试数学试题
2024·全国·模拟预测
名校
5 . 已知等差数列
的前n项和为
,
,
,则
最大时
( )
![](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/7dc352f71e67467a7a9d59bb1e0633db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a515b81c98474b9e271d0ddf3d822331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.6 | B.5 | C.4 | D.3 |
您最近一年使用:0次
解题方法
6 . 《周髀算经》记载:一年有二十四个节气,每个节气唇(guǐ)长损益相同,夏至、小暑、大暑、立秋、处暑、白露、秋分、寒露、霜降、立冬、小雪、大雪是连续十二个节气,其日影子长依次成等差数列.经记录测算,夏至、处暑、霜降三个节气日影子长之和为16.5尺,这十二节气的所有日影子长之和为84尺,则夏至的日影子长为( )尺
A.1 | B.1.25 | C.1.5 | D.2 |
您最近一年使用:0次
7 . 在数列
中,
为前
项和,若
,
,
,则其公差
( )
![](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/391fbfc6dfbeae571f953f565cad0502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbd10104f790c96168b3c20f63254a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627411fce8e2b6ab40ac1166b45ada6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.3 | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-11更新
|
1378次组卷
|
8卷引用:云南省红河州绿春县高级中学2021-2022学年高二上学期期末数学(文)试题
云南省红河州绿春县高级中学2021-2022学年高二上学期期末数学(文)试题(已下线)模块一 专题5《等差数列与等比数列》单元检测篇 A基础卷 期末终极研习室(高二人教A版)(已下线)模块一 专题5 等差数列与等比数列 期末终极研习室(2023-2024学年第一学期)高二人教A版(已下线)专题04 数列(1)湖南省长沙市长沙县市示范学校2023-2024学年高二上学期期末检测数学试卷湖南省长沙市长沙县省示范学校2023-2024学年高二上学期期末检测数学试题(已下线)模块一 专题1 数列基础、等差数列和等比数列【讲】高二下人教B版(已下线)模块一 专题2 数列基础、等差数列和等比数列【讲】高二下北师大版
名校
8 . 已知等差数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9809be621e6e9a7d0401c73e04e41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee14225c3f0e9be2f699eb406cd8fc1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74902d11109c23a563f265982dcefec.png)
A.25 | B.35 | C.40 | D.50 |
您最近一年使用:0次
2023-04-07更新
|
2058次组卷
|
6卷引用:云南省宣威市第三中学2022-2023学年高二下学期第二次月考数学试题
2023·全国·模拟预测
名校
9 . 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
解题方法
10 . 已知数列
是等差数列,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e8a183c110f36db1a355b4b3550476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
A.3 | B.4 | C.7 | D.8 |
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