1 . 对于曲线
:
上的任意一点P,如果存在非负实数M和m,使不等式
恒成立
为坐标原点,M的最小值为
,m的最大值为
,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b31ef7d04da62b28c25637de25f041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4aef2222db5f282e692e488dc44f262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0feef0c6654b595a5d45650f477a0533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80a81809ab0dc77992553ee2b7e7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894263664f880c40777c049482a62ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6af53161f058ebee7277d5865ed618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.3 | B.4 | C.5 | D.13 |
您最近一年使用:0次
2018高三·全国·专题练习
2 . 实数x、y满足
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e855d9bd5c3a8b7257ed7ddbd2d34038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce0cbb825b4f50960efa0afa87a0e17.png)
您最近一年使用:0次
名校
3 . 已知椭圆的标准方程为
,
为椭圆的左右焦点,O为原点,P是椭圆在第一象限的点,则
的取值范围( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97c03e426bf8e2983d338b5af2712f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882651b776851f3f0665de12da6ed47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4217f8cc1e0df6f24fb71dc2bb1e6ac1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 设集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa0b4185824a9bc26078faeabcce485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知点
在椭圆
上,
,
是椭圆的焦点,若
为钝角,则
点的横坐标的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0232be17d441190a227f0204ea0ca98.png)
![](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/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
12-13高二上·江苏南通·期末
6 . 点A、B分别是椭圆
长轴的左、右端点,点F是椭圆的右焦点,点P在椭圆上,且位于x轴上方,
.
(1)求点P的坐标;
(2)设M是椭圆长轴AB上的一点,M到直线AP的距离等于
,求点M的坐标;
(3)在(2)的条件下,求椭圆上的点到点M的距离d的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ac28f4009db85e217fcc01a02d8084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a336618deb2d5cfd6ef3af5b4c73faad.png)
(1)求点P的坐标;
(2)设M是椭圆长轴AB上的一点,M到直线AP的距离等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
(3)在(2)的条件下,求椭圆上的点到点M的距离d的最小值.
您最近一年使用:0次