1 . 若曲线
上恰有四个不同的点
到直线
及点
的距离都相等,则实数a的一个值可以是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c234d4721b2278f9af782f666d37c7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cebb466d8642424bd583e8843ffe39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb7ca2d544f528ff1afcbb5c365f337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9775d61eedd3f30c8817892ca27fdd34.png)
您最近一年使用:0次
2023-04-08更新
|
748次组卷
|
3卷引用:山东省聊城市2023届高三下学期期中数学试题
名校
2 . 已知焦点在
轴上的抛物线
过点
,椭圆
的两个焦点分别为
,其中
与
的焦点重合,过
与长轴垂直的直线交椭圆
于
两点且
,曲线
是以原点为圆心以
为半径的圆.
(1)求
与
及
的方程;
(2)若动直线
与圆
相切,且与
交与
两点,三角形
的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1f3420079628d3636d7f14d7707a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882651b776851f3f0665de12da6ed47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca7009bdcae42a809c851a7b8f1d61d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc6d96c65b0061a7a05a678a8779f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2817b6f5ccf1d79304473234b1a725ef.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc6d96c65b0061a7a05a678a8779f5c.png)
(2)若动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc6d96c65b0061a7a05a678a8779f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad57e3727b7bbd795b05332fbf9649e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df37f75ee83b3d127e3c783863561137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
11-12高二下·山东聊城·期中
名校
3 . 动圆的圆心在抛物线
上,且动圆恒与直线
相切,则动圆必过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a955ba5c572b82d3695c86833c82ce11.png)
A.(4,0) | B.(2,0) |
C.(0,2) | D.(0,-2) |
您最近一年使用:0次
2016-12-01更新
|
914次组卷
|
5卷引用:2011-2012学年山东冠县武训高中高二下学期模块考试文科数学试卷
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