名校
1 . 在锐角
中,内角
的对边分别为
,若
,则下列各式正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d1a99d31e3bc541277a56646428c67.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-01-15更新
|
705次组卷
|
6卷引用:上海市复兴高级中学2015-2016学年高三下学期3月月考(文)数学试题
2 . 当
时,若关于
的方程
有且仅有一个实根,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58119f48aa8860923d1f13dd78a17c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb3ec376a296f0c83378d23714ab416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 下列三个命题:①存在实数
,使得
成立;②存在实数
,使
成立;③若
,则
.其中正确命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec43b9d391f1b1299b9bbb85bcd3818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e27a7bb8aecd9052d6c992015e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79e9690fec7ed86dab8139204c0d80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a99315d5a1f4f3ef9adb6b7448fbbe.png)
A.①和② | B.②和③ | C.仅有② | D.仅有③ |
您最近一年使用:0次
4 . 已知
中,
,
,
.在三角形所在的平面内有两个动点
和
,满足
,
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0de1246b931787a51bb32618d6eab8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de2cc86670317a553b9becb4b3feb5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce2bcfc0fe0c997f139cf9997f0e06.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-04-01更新
|
452次组卷
|
2卷引用:上海市虹口区2018届高三上学期期末教学质量监控数学试题