已知动点
到定点
和到直线
的距离之比为
.
(1)求动点
的轨迹
的方程;
(2)若
,
,过点
的直线与曲线
相交于
,
两点,则
是否为定值?若是,求出该值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4164492ce5c19759bb589355ef14ad90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38825e08a99276f2b45a05145ce5a6ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10927c5f230e0fc880181256b61b57d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf6b7bee6f54006b7f6c4bc7c3c242b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bb33c237501f4cb7300f68246ac9ff.png)
更新时间:2022-01-15 18:54:46
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适中
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名校
【推荐1】一动圆过定点
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【推荐2】设三个数
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(1)求
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【推荐1】已知椭圆
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【推荐2】在平面直角坐标系
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解答题-问答题
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适中
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【推荐1】已知椭圆
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适中
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