1 . 在四边形
中,若
,且
,则这个四边形是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7769c1d7dc9dacd87ee9246a1c059e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfb87ccee8abfaee6e88e6f5e63609f.png)
A.平行四边形 | B.菱形 | C.矩形 | D.等腰梯形 |
您最近一年使用:0次
2017-05-10更新
|
478次组卷
|
2卷引用:吉林黑龙江八校联合体2016-2017学年高一下学期期中考试数学试题
解题方法
2 . 若角
满足
,则角
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e67d5b21e30e99ff4952532056373f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.第一象限角或第二象限角 | B.第二象限角或第四象限角 |
C.第一象限角或第三象限角 | D.第二象限角或第三象限角 |
您最近一年使用:0次
3 . 设向量
,
,
,则实数
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f268c67bc01789c661997588a2cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1079526683ec76e9af4fece16b2093a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.-1 | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
4 .
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dad3af084f57d83f9115d26afbd51d8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知函数
,则函数
在区间
所有零点的和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75d120478ae032f1339c3f908c962fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3c671bb2253e496c1f23f0b95ccb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4695c34aafd1c1ae276f9eddc53a397d.png)
A.6 | B.8 | C.12 | D.16 |
您最近一年使用:0次
2017-05-10更新
|
758次组卷
|
2卷引用:吉林省实验中学2017届高三下学期第八次模拟考试(期中)数学(文)试题
名校
解题方法
6 . 已知平面向量
,
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788fa471d53a8be8dd55f561aecbf99d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf69b5f85d52b6aca489c6016c32a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975c28288ff8992c437f9d606e234c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f229938e86b145441665f8b3dbab16ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 向量
在正方形网格中的位置如图所示,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
![](https://img.xkw.com/dksih/QBM/2017/3/6/1637845450801152/1666512412246016/STEM/46cc84f3e5a84ab4a387fc0cadc4cde9.png?resizew=209)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7cad34fccd0fe584087604e863f352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4fc4201c6528e2d7dc40fc1a21f338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89acc82cb747ff57569b0bcaf68f877d.png)
![](https://img.xkw.com/dksih/QBM/2017/3/6/1637845450801152/1666512412246016/STEM/46cc84f3e5a84ab4a387fc0cadc4cde9.png?resizew=209)
A.2 | B.4 | C.5 | D.7 |
您最近一年使用:0次
2017-04-15更新
|
706次组卷
|
2卷引用:2017届吉林省梅河口市第五中学高三一模数学(文)试卷
8 . 已知向量
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a13b56e1a6477edbd2d78670c840f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12976a4d92584494d1c2c714684d45b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 设函数
,若方程
恰好有三个根,分别为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7137aec74c20054fc1397757ade313e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc231c399eaba3ac0c3593ca0a362f1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181bea13d6ce380e80eb22e5475eac5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5b965b3f27889e139013aa8c8f8fe3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-04-07更新
|
899次组卷
|
2卷引用:2017届吉林省延边州高三下学期高考仿真考试数学(文)试卷
10 . 已知向量
,且
与
的夹角为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b05f483e9fd023c62abc475ab81659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ba2068489417927b04dedb96d87282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787902056794fd718bfeec12825522b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次