名校
1 . 已知平面上两定点
、
,则所有满足
(
且
)的点
的轨迹是一个圆心在
上,半径为
的圆.这个轨迹最先由古希腊数学家阿波罗尼斯发现,故称作阿氏圆.已知棱长为3的正方体
表面上动点
满足
,则点
的轨迹长度为( )
![](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/0c411fff1dd83ca4c5afca219f4bb541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472393b18c7880e73b40e31fbe2d951c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80af1b0496f63751f07e945c062ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab34ce6cee0673ab0d37b660d57bc07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-11更新
|
2611次组卷
|
9卷引用:黑龙江省哈尔滨市第九中学校2023届高三第五次模拟考试数学试卷
名校
解题方法
2 . 已知函数
,
,曲线
的图象上不存在点P,使得点P在曲线
下方,则符合条件的实数a的取值的集合为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c3f016897d3a48b9284ee25be6b864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b26febaa9052e66202ffec71a19c916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-06更新
|
1286次组卷
|
3卷引用:黑龙江省哈尔滨市第三中学校2022届高三第三次模拟考试理科数学试题