在平面直角坐标系
中,动点P与定点
的距离和它到定直线
的距离的比是常数
,设动点P的轨迹为曲线C.
(1)求曲线C的方程;
(2)以原点O为端点作两条互相垂直的射线与曲线C分别交于点M,N.求证:
是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfe87e29d5bd01cb142e40828ad5f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d0aa9412dd7caf42cc71520e282328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e483f50a009f2f66b269528e213756e6.png)
(1)求曲线C的方程;
(2)以原点O为端点作两条互相垂直的射线与曲线C分别交于点M,N.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd908ea0fea10e9ae17b63da04845468.png)
23-24高二上·安徽·阶段练习 查看更多[3]
安徽省江淮名校2023-2024学年高二上学期12月阶段性联考数学试题(已下线)专题03 圆锥曲线题型全归纳(九大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)河北省石家庄市赵县河北赵县中学、高邑县第一中学、无极中学2023-2024学年高二下学期4月月考考试检测数学试题
更新时间:2023-12-31 00:23:53
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【推荐1】在平面直角坐标系中,有两个圆
:
,和圆
:
,一动圆
与圆
内切,与圆
外切.动圆圆心
的轨迹是曲线
,直线
与曲线
交于
两个不同的点.
(1)求曲线
的方程;
(2)求实数k的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f486d1a90a52bf37afc19da0d0f9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9564d6cb8edd0eceb1ce6f7d034660d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231896d2386c924306fce5ccf9f9e8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)求实数k的取值范围;
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【推荐2】设圆
与圆
,动圆C与圆
外切,与圆
内切.
(1)求动圆C的圆心轨迹L的方程;
(2)已知点
,P为L上动点,求
最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c3305d6e09dafcd39ca4f38feb0c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ecdd0419df9296aa42e144af6f5864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求动圆C的圆心轨迹L的方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f26cd7b2afcd3f700cbffe61b604de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b570a4881f03ae8c483815a83fecf8d6.png)
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【推荐1】已知双曲线
,
为
上的任意点.
(1)求证:点
到双曲线
的两条渐近线的距离的乘积是一个常数;
(2)设点
的坐标为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cdb31a0b09e622ed43de70e6b4b029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623afc24f2227004b0e1b3922dfb954b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce5dcaffd91bc44cda4a2e44000ae73.png)
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【推荐2】已知双曲线
的离心率为
,过双曲线
的右焦点
作渐近线的垂线,垂足为
,且
(
为坐标原点)的面积为
.
(1)求双曲线
的标准方程;
(2)若
,
是双曲线
上的两点,且
,
关于原点对称,
是双曲线上异于
,
的点.若直线
和直线
的斜率均存在,则
是否为定值?若是,请求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2c45104b312fbbbff86e4141aab1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
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