设
满足:
,则
的轨迹为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18839a668ecb7332549dcfbea0f3222c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.圆 | B.椭圆 | C.双曲线 | D.不存在 |
23-24高二上·浙江金华·阶段练习 查看更多[2]
更新时间:2023-12-07 21:54:12
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【推荐1】如图,把椭圆
的长轴
分成8等份,过每个分点作
轴的垂线分别交椭圆的上半部分于点
,
,…,
,
是左焦点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/b06833fe-22d2-4c35-a5dd-a205c36154af.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb82d62ae6889a177c70d3adf8a91056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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A.21 | B.28 | C.35 | D.42 |
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【推荐2】椭圆
的两个焦点为
,过
作垂直于
轴的直线与椭圆相交,
为一个交点,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】到定点(2,0)的距离与到定直线
的距离之比为
的动点的轨迹方程( )
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A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】在平面直角坐标系中,已知两点
,
,点
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的轨迹方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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