解题方法
1 . 设数列
的前
项和为
,
且
,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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ff1bcbf33da377246492c1ef7ef49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1f1b7e9e20d799ee3c06b89a0611c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-10更新
|
646次组卷
|
2卷引用:四川省宜宾市2022届高三下学期第三次诊断测试数学(文)试题
名校
2 . 已知
为等差数列,
为其前
项和,若
,则公差
等于( )
![](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/76dfbfdd1c25d446ef2ef5534419e3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.3 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-01更新
|
675次组卷
|
5卷引用:四川省遂宁市射洪市四川省射洪中学校2023届高三上学期12月月考理科数学试题
四川省遂宁市射洪市四川省射洪中学校2023届高三上学期12月月考理科数学试题北京市密云区2022届高三4月期中数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(北京卷)山东省菏泽市第三中学2022-2023学年高二上学期12月月考数学试题(已下线)4.2.2等差数列的前n项和公式(第1课时)(导学案)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)
解题方法
3 . 等差数列
的公差为
,记数列
前
项和为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4184597c94d1077842234d5f6c1d00a3.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/a8a0eecb5b800fce9ae10aed86ffee62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b5865482d8b3821472e823a126d5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 等差数列
的公差为正数,记前
项和为
,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/a8a0eecb5b800fce9ae10aed86ffee62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b5865482d8b3821472e823a126d5ca.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知等差数列{
}的前n项和为
,且
,
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439f8b350a756c2f9434c57486d39ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a383fe6d68ed233c5c5ab25a702f097d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
A.6 | B.10 | C.12 | D.20 |
您最近一年使用:0次
2022-04-20更新
|
685次组卷
|
3卷引用:四川省内江市第六中学2022届高三下学期考前第一次强化训练数学(理科)试卷
名校
解题方法
6 . 已知数列
的前n项和为
,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639f8179646bb0adc01d7c12c2734557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2f03f58e3c85de45bd3fd86a8a66f7.png)
A.4043 | B.4042 | C.4041 | D.4040 |
您最近一年使用:0次
2022-04-14更新
|
4019次组卷
|
7卷引用:四川省射洪市2022届高三下学期高考模拟测试理科数学试题
四川省射洪市2022届高三下学期高考模拟测试理科数学试题四川省射洪市2022届高三下学期高考模拟测试文科数学试题黑龙江省哈尔滨市第三中学2022届高三第二次模拟考试理科数学试题安徽师范大学附属中学2022届高三下学期4月测试理科数学试题(已下线)理科数学-2022年高考考前押题密卷(全国甲卷)(已下线)文科数学-2022年高考考前押题密卷(全国甲卷)(已下线)专题04 数列(3)
名校
解题方法
7 . 设等差数列
的前
项和为
,满足
,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/92e8f3351850088bad71823bb89f26c9.png)
A.![]() | B.![]() ![]() |
C.![]() | D.满足![]() ![]() |
您最近一年使用:0次
2022-03-24更新
|
1622次组卷
|
7卷引用:四川省南充市2022届高考适应性考试(二诊)文科数学试题
四川省南充市2022届高考适应性考试(二诊)文科数学试题四川省南充市2022届高考适应性考试(二诊)理科数学试题四川省峨眉第二中学校2021-2022学年高一下学期期中考试理科数学试题四川省峨眉第二中学校2021-2022学年高一下学期期中考试文科数学试题(已下线)4.1 等差数列(精练)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)重庆市2023届高三下学期开学摸底数学试题(已下线)4.2 等差数列(3)
解题方法
8 . 设等差数列
的前
项和为
,且
,
,则
取最小值时,
的值为( )
![](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/8c5b7ebdbceddc033fc579246b6c5bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f4d9c96575985ca2ee98682064cb6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.19 | B.20 | C.21 | D.20或21 |
您最近一年使用:0次
2022-03-23更新
|
944次组卷
|
5卷引用:四川省广安市2022届高三第二次诊断考试数学(理)试题
名校
9 . 已知数列
的前
项和为
.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/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211c94613cee680a4d3f034967021501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-22更新
|
1633次组卷
|
7卷引用:四川省成都市2022届高三第二次诊断性检测文科数学试题
名校
10 . 正项等比数列
与正项等差数列
,若
,则
与
的关系是( )
![](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/6615b816478f5c5613b9a3a28de703f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64fcc69dc28bc11b22f5c9bec9e2aa1.png)
A.![]() | B.![]() | C.![]() | D.以上都不正确 |
您最近一年使用:0次
2022-03-19更新
|
428次组卷
|
4卷引用:四川省凉山州2022届高三第二次诊断性检测数学(理科)试题