名校
解题方法
1 . 在等差数列
中,
,
是方程
的两根,则
的前6项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddd2e4dad2d7e941b228008537afc09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.48 | B.24 | C.12 | D.8 |
您最近一年使用:0次
2024-06-11更新
|
620次组卷
|
5卷引用:第五套 艺体生新高考全真模拟 (二模重组卷)
(已下线)第五套 艺体生新高考全真模拟 (二模重组卷)吉林省长春市东北师范大学附属中学2023-2024学年高三下学期第七次模拟考试数学试卷江西省赣州市2023-2024学年高三下学期5月适应性考试数学试题(已下线)4.2.2等差数列的前n项和公式(1)河北省衡水市武邑中学2023-2024学年高二下学期第二次月考数学试题
2 . 已知数列
满足
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651b05c4f2f3f750c2c77f0f4dd90245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316a061744ea8475205205a19afd2b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b8d88cc1059a7b6d79944f5fcda983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc41a964cee9cff69c3b805afd29f086.png)
A.512 | B.678 | C.1010 | D.1022 |
您最近一年使用:0次
2024-06-11更新
|
599次组卷
|
5卷引用:高三数学考前押题卷3
(已下线)高三数学考前押题卷3(已下线)安徽省合肥市第一中学2024届高三下学期三模数学试题2024届普通高招全国统一考试临考预测押题密卷数学试题(A卷)(已下线)【人教A版(2019)】高二下学期期末模拟测试A卷吉林省通化市梅河口市第五中学2024届高三三模数学试题
解题方法
3 . 在△ABC中,内角A,B,C所对的边分别为a,b,c,
,且
,则△ABC周长的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8391a30a191b22e483db135fd476cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fa1bf739b98363657e0c2dda6e545b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 已知数列
的前n项和为
,若
,
,且
,
都有
,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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315b41eeea0dbaa395af2474c4ba6acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c68b253787b7980d259a243ee42ecfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa0d7e6c9c370ca8d040f6b4b40cee90.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024·全国·模拟预测
名校
解题方法
5 . 已知三棱锥
的外接球的体积为
,
平面
,
,
,则三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18aaaddbf4b17da45a5821c349f6e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c439e4e4e48b17e19e666d892216fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b229bf0a565049936d2931435f36da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd1e379a269e9f2018bf4bc0293ecf0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a94d59dee2d5a8f0425b64b2083825.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024·全国·模拟预测
6 . 已知等差数列
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/5170584604571b5e1afd5ece941e2e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69820b8669c6747e43ab94393fe2190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
A.13 | B.14 | C.15 | D.16 |
您最近一年使用:0次
7 . 对于数列
,规定
为数列
的一阶差分,其中
,规定
为数列
的k阶差分,其中
.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e041b6f4afd9b5090e4a6b05c9b82ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6558223c3276e691c569a665b9ac5d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f781d8e7a2965dff564da860e2f8d32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7526cb1a1beabec0268efd30460e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d6a804f6bed86e43859b180f466aa55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bb3d7598f05034a952bf5495354b9f.png)
A.7 | B.9 | C.11 | D.13 |
您最近一年使用:0次
2024·全国·模拟预测
解题方法
8 . 若5个正数之和为2,且依次成等差数列,则公差
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024·全国·模拟预测
9 . 已知数列
与
是公差相同的两个等差数列,且
,则
( )
![](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/d58487b2b91419837d6714fde0c88f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.![]() | B.0 | C.2 | D.不确定 |
您最近一年使用:0次
解题方法
10 . 已知数列
满足
,其前n项和为
,则使得
成立的n的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77bb1e2b7263009a5bfa4302db7e48a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5137c2b46bc875822a6496b350d3f46.png)
A.8 | B.9 | C.10 | D.11 |
您最近一年使用:0次