名校
1 . 若曲线
上存在点
,使
到平面内两点
,
距离之差的绝对值为8,则称曲线
为“好曲线”.以下曲线不是“好曲线”的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122cf7a2f27fadf126b282fb1b3e1533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da50ebd2656745259525c8b157e389e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-11更新
|
232次组卷
|
2卷引用:江苏省南京市燕子矶中学2022-2023学年高二上学期期末数学试题
名校
2 . 已知抛物线
,椭圆
,它们有共同的焦点
,并且相交于
、
两点,
是椭圆的另一个焦点.试求:
(1)
的值;
(2)
、
两点的坐标;
(3)
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb783f89d6c82bb0b59f6f28e669dcd.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
您最近一年使用:0次
解题方法
3 . 设抛物线
与椭圆
相交于
两点,若
为抛物线的焦点,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6db6b0a06b1ce3e474b70ff296610a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6396a8134adc09aef6f9f8751bb1ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffbb6cebb4351ef9d002e274f18f130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3abf3173133683369785897e67fa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ac7353dc499536c52a2aa669a212a8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次