名校
1 . 若直线
与曲线
恰有一个公共点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653f2cee7d7aa6fbe1f014ecaa2b944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154fa4f13253a697f23c0a58fd1bc680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() ![]() | B.![]() ![]() ![]() ![]() |
C.![]() ![]() | D.![]() ![]() ![]() ![]() |
您最近一年使用:0次
2018-01-16更新
|
473次组卷
|
3卷引用:新疆维吾尔自治区乌鲁木齐市第二十三中学2024届高三下学期5月月考数学试题
名校
2 . 抛物线
的焦点坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add0263f85dd38063a66fbca42802a14.png)
A.(![]() ![]() | B.(![]() | C.(![]() | D.(![]() |
您最近一年使用:0次
2016-12-04更新
|
688次组卷
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3卷引用:新疆维吾尔自治区乌鲁木齐市实验学校2023-2024学年高二上学期期末数学试题
名校
解题方法
3 . 如图,
地在高压线
(不计高度)的东侧0.50km处,
地在
地东北方向1.00km处,公路沿线
上任意一点到
地与高压线
的距离相等.现要在公路旁建一配电房向
、
两地降压供电(分别向两地进线).经协商,架设低压线路部分的费用由
、
两地用户分摊, 为了使分摊费用总和最小,配电房应距高压线
( )
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571960773165056/1571960778883072/STEM/3cd16b4e29b446a4a793b139e2edae78.png?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571960773165056/1571960778883072/STEM/3cd16b4e29b446a4a793b139e2edae78.png?resizew=120)
A.1.21km | B.0.50km | C.0.75km | D.0.96km |
您最近一年使用:0次
2016-12-03更新
|
237次组卷
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2卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2023-2024学年高二上学期期末数学试题
2012·全国·一模
解题方法
4 . 过双曲线
(
)的左焦点
作
轴的垂线交双曲线于点
,
为右焦点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931741671bb117a4a3ee643f77fb293d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-01更新
|
724次组卷
|
4卷引用:新疆维吾尔自治区喀什地区喀什十四校2023-2024学年高二上学期期末数学试题
新疆维吾尔自治区喀什地区喀什十四校2023-2024学年高二上学期期末数学试题山东省烟台爱华高级中学2023-2024学年高二上学期期末模拟数学试题(二)B卷(已下线)2012届新课标高三下学期二轮复习综合验收(5)理科数学试卷(已下线)2012届河南省郑州外国语学校高三下学期综合考试验收5理科数学