在平面直角坐标系中,
,圆
,动圆
过
且与圆
相切.
(1)求动点
的轨迹
的标准方程;
(2)求曲线
上的点
到直线
的最大距离,并求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b8739bfa5d53e90971e561fb015276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1a23dadd96d2030122af333fd24973.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)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09324568f2f3995b2f932e66ee5926ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2022-11-16 16:17:58
|
相似题推荐
解答题
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解题方法
【推荐1】已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
的右焦点与抛物线
的焦点重合,点
在椭圆
上.
(1)求椭圆
的标准方程;
(2)设
,直线
与椭圆
交于
两点,
,(其中
为坐标原点),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b68bed5f53ce98a19785d81b7ca2336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e67baac84cf5c95d06d50c36cab7c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a297f399ee48fe07cd6aacc935a1c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45bee0114229252e90a4eaaed413f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知圆
与圆
的公共点的轨迹为曲线
.
(1)求
的方程;
(2)已知点
,过
的直线与曲线
交于
两点.直线
与直线
分别交于不同的两点
,证明:以
为直径的圆过点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8b4fe3d22d3bc9b609ed7d237495fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933c46a438d6ec4410212dfb32d07e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
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【推荐1】已知椭圆C:
(a>b>0)的上顶点E与其左、右焦点F1、F2构成面积为1的直角三角形.
(1)求椭圆C的方程;
(2)若斜率为
的直线
与圆
相切,与Ⅰ中所求的轨迹C交于不同的两点
,且
(其中
是坐标原点),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
(1)求椭圆C的方程;
(2)若斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f8accdb21a85e7251360bdb6b6953a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47228219fabd10528cbede0f006c5e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知椭圆
的两焦点分别是
,点
在椭圆
上,
(1)求椭圆
的方程;
(2)设
是
轴上的一点,若椭圆
上存在两点
,使得
,求以
为直径的圆面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01db0118fedcf6fcdde99ee28fe5618a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef9919b760121c8e04cc5c9933ec6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f045cd8a093c89defebd2887db22952f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
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解题方法
【推荐3】设椭圆E1的长半轴长为a1、短半轴长为b1,椭圆E2的长半轴长为a2、短半轴长为b2,若
,则我们称椭圆E1与椭圆E2是相似椭圆.已知椭圆E:
,其左顶点为A、右顶点为B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/5dac46bc-e949-45a4-b896-78217eb24e98.png?resizew=153)
(1)设椭圆E与椭圆F:
是“相似椭圆”,求常数s的值;
(2)设椭圆G:
,过A作斜率为k1的直线l1与椭圆G只有一个公共点,过椭圆E的上顶点为D作斜率为k2的直线l2与椭圆G只有一个公共点,求|
的值;
(3)已知椭圆E与椭圆H:
是相似椭圆.椭圆H上异于A、B的任意一点C(x0,y1),且椭圆E上的点M(x0,y2)(
)求证:AM⊥BC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd731967bb86ddf18e9e473daa96041a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/5dac46bc-e949-45a4-b896-78217eb24e98.png?resizew=153)
(1)设椭圆E与椭圆F:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b1f480c4cc86e47a97b712ce8473e7.png)
(2)设椭圆G:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8af798961237df56e74e191b88dc65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249f2c7aeab56b0265bbfb3b57011453.png)
(3)已知椭圆E与椭圆H:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f89b0bea245d8e71276f43503bae040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddef7fc1094028667143de29690d9a07.png)
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