已知曲线
关于直线
对称,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e446428877558381252056e196467d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360c1098f4d49b60307a93c82a6495f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f879f6e8df7d5fb261328806260b3.png)
A.![]() | B.4 | C.![]() | D.8 |
更新时间:2024-05-24 10:49:38
|
相似题推荐
单选题
|
适中
(0.65)
解题方法
【推荐1】圆
上有且仅有三点到双曲线
一条渐近线的距离为
,双曲线的焦距为
,则下列说法错误的是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62dda9a53e24fd8a32c8e03d1e9d463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c4088276acdbede4781b2ebc466366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
A.双曲线![]() ![]() |
B.直线![]() ![]() |
C.双曲线![]() ![]() |
D.过点![]() ![]() |
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【推荐2】数学家阿波罗尼斯证明过这样一个命题:平面内到两定点距离之比为常数
且
的点的轨迹是圆,后人将这个圆称为阿波罗尼斯圆,简称阿氏圆.已知在平面直角坐标系
中,
,动点
满足
,得到动点
的轨迹是阿氏圆
.若对任意实数
,直线
与圆
恒有公共点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844da174d67557f7a44c0962d51189b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56a9870ee77ce3930c6692af93bc7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed154dc722c0576255346d7f237969ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046aeab2b8ef191cf51ae9d307b1f665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】若实数a ,b ,c均大于0,且a+b+c=3,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e7d0e0622325f023cb97c196e388a.png)
A.3 | B.1 | C.![]() | D.![]() |
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【推荐2】已知
,
是椭圆和双曲线的公共焦点,
是它们的一个公共点,且
,则椭圆和双曲线离心率倒数之和的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db634c178cd7bffbd4cb886e3f2cca22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】过点
的直线与
轴正半轴相交于点
,与
轴正半轴相交于点
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a45be8a81c0d42653f35aa2175d7ea.png)
A.6 | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
中,
为线段
上的动点,且
,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/87f308cb-9139-4fff-a04b-b1dfcb07d841.png?resizew=231)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ae85575733ecc904cb2fe8fbe48c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3010aa240cb195312b2875f5380b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f11b3888e4ba50a751ff521419309f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/87f308cb-9139-4fff-a04b-b1dfcb07d841.png?resizew=231)
A.8 | B.9 | C.12 | D.16 |
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