12-13高一下·辽宁·期中
1 . 等差数列
的前n项和为
,下列选项不可能是
的图像的是
![](https://img.xkw.com/dksih/QBM/2013/5/20/1571218592784384/1571218598166528/STEM/acd6fbbc4a14450fb16a8eae263132ce.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2013/5/20/1571218592784384/1571218598166528/STEM/557aa798a4f34e4ab79c033d2d9a09bd.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2013/5/20/1571218592784384/1571218598166528/STEM/411b395df4734bba8c168daa672baa76.png?resizew=45)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
11-12高二上·辽宁·期中
2 . 在
中,
,则
一定是( )
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097510400/STEM/246a368fa0e54a5dad08b086c576e4bc.png)
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097510400/STEM/258f96877cb3415b94c0c0ef4685467d.png)
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097510400/STEM/246a368fa0e54a5dad08b086c576e4bc.png)
A.锐角三角形 | B.钝角三角形 |
C.等腰三角形 | D.等边三角形 |
您最近一年使用:0次
11-12高二上·辽宁·期中
3 . 在数列-1, 0,
,
,……,
中,0.08是它的
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097485824/STEM/61a7f6c0514b4c3eaac72eb852e0ff4f.png)
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097485824/STEM/681aca2639ed45e688fa8f89581f831a.png)
![](https://img.xkw.com/dksih/QBM/2011/11/22/1570358092578816/1570358097485824/STEM/5c5c5c4267fa4b4f8791f2b703015202.png)
A.第100项 | B.第12项 | C.第10项 | D.第8项 |
您最近一年使用:0次
2011·辽宁丹东·一模
4 . 已知实数
、
满足约束条件
,若使得目标函数
取最大值
时有唯一最优解
,则实数
的取值范围是
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/8d220c88e2b24d30a992738ef06d8bda.png)
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/9ff9a5dd85ca4f31a385aa4ed3edfe1f.png)
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/a61a1ddb68de43a9b02ca3434fd667e3.png)
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/d83d250a494443d6adc2eb85eec1e316.png)
时有唯一最优解
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/9f22bc2e81be4e3d95bfb62dc54be333.png)
![](https://img.xkw.com/dksih/QBM/2011/7/18/1570265187606528/1570265192775680/STEM/5b6810467ebf429ab66a0e25274a4589.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2011·吉林·一模
名校
5 . 数列
的前
项和为
,
,则数列
的前50项和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4558d082c4423ceacf45a1c4c663ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326cf71a829818963849b7e97038d52b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
A.49 | B.50 | C.99 | D.100 |
您最近一年使用:0次
2011-04-22更新
|
877次组卷
|
8卷引用:辽宁省大连市第八中学2017-2018学年高二上学期期中考试数学(理)试题
辽宁省大连市第八中学2017-2018学年高二上学期期中考试数学(理)试题(已下线)2011届吉林省油田中学高三第一次模拟考试数学理卷(已下线)2012届山东省冠县武训高中高考模拟预测数学文试卷(已下线)2014届甘肃省兰州一中高考模拟一文科数学试卷天津市耀华中学2018届高三12月月考数学(文)试题【全国校级联考】广东省深圳实验,珠海一中等六校2019届高三第一次联考数学文试题(已下线)专题6.4 数列求和(精练)-2021届高考数学(理)一轮复习讲练测天津市第七中学2024届高三上学期第二次月考数学试题
2011·辽宁·模拟预测
6 . 程序框图如图所示,将输出的a的值依次记为
,
,…,
,其中
且
.则数列
的通项公式为( )
![](https://img.xkw.com/dksih/QBM/2011/3/29/1570085018656768/1570085023547392/STEM/ceccce429e2d44f9ab682a5603732494.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8676904179cba2add222b11be24fc9d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2011/3/29/1570085018656768/1570085023547392/STEM/ceccce429e2d44f9ab682a5603732494.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9-10高三·辽宁丹东·阶段练习
7 . 已知等比数列
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13969eea8536a28250516f0653a76e71.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 已知二次函数
,当
依次取
时,其图象在
轴上所截得的线段的长度的总和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb8e050f34dede4b1e0db50c964c9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff0f774d203f8a7533241091bceb37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2011-03-09更新
|
560次组卷
|
2卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学文卷
11-12高三上·辽宁铁岭·阶段练习
9 . 设
,点集
的点
满足下列所有条件:①
;②
;③
;④
;⑤
.则
的边界是一个有几条边的多边形 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaf11c12107c0bdbf512a9d23eaf36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a9b0900341347dfb4f78bbe7f0e369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adce8b28133316d8fb06d08979c7512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6de8c9d9f03cf9ad1eab1b624e0f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef514dcbd57f4c63e98659fcc620beac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10-11高三上·浙江杭州·阶段练习
10 .
在
上满足
,则
的取值范围是
![](https://img.xkw.com/dksih/QBM/2012/5/3/1570848308813824/1570848314220544/STEM/55437f95948f466a91e62b24d8783e82.png)
![](https://img.xkw.com/dksih/QBM/2012/5/3/1570848308813824/1570848314220544/STEM/a8a2aa41196543f1a47d4e23db5fde51.png)
![](https://img.xkw.com/dksih/QBM/2012/5/3/1570848308813824/1570848314220544/STEM/232321cc10fe4af7a3ac3c937e24c080.png)
![](https://img.xkw.com/dksih/QBM/2012/5/3/1570848308813824/1570848314220544/STEM/209881c7c62148ff8d84e4dbed7738f4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次