已知点
是圆
上的任意一点,点
为圆
的圆心,点
与点
关于原点对称,线段
的垂直平分线与线段
交于点
.
(Ⅰ)求动点
的轨迹
的方程;
(Ⅱ)设点
,若直线
轴,且与曲线
交于另一点
,直线
与直线
交于点
.
(1)证明:点
恒在曲线
上;
(2)求
面积的最大值.
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/b32cc70e16444a5d8f39a1499d9fc4fe.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/a600941dffe64e66aa1e9d525a27384c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/959545667d2041d6b3ff962950508cb4.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/959545667d2041d6b3ff962950508cb4.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/687bf65355354e218d84d5a66933d5bb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/959545667d2041d6b3ff962950508cb4.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/3ee7b3fc7fb5496ea17a874a01c04bc8.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/f6051466f5c8485fad161feb12cc42fc.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/5f0380f65773446eb5601d3c5c192c4b.png)
(Ⅰ)求动点
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/5f0380f65773446eb5601d3c5c192c4b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/657d1d60a7224c34b554a4e81af7f16f.png)
(Ⅱ)设点
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/2615fa7a2b4b4c9fa5234c17d8ca3d16.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/394bcb75d817442aa8bff698d6752797.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/657d1d60a7224c34b554a4e81af7f16f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/52d8b5dbcbaf4ec0b646183dda384ecb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/2e7410da15f3401e9078e8be345a8781.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/79ad8bd4d45a4f6596d881ae130d5efb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/9c97577743e54f18bb34c1681700730e.png)
(1)证明:点
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/9c97577743e54f18bb34c1681700730e.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/657d1d60a7224c34b554a4e81af7f16f.png)
(2)求
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572674305785856/1572674312085504/STEM/f588a1d9b8684b17bfc93e132d006d18.png)
更新时间:2016-12-04 08:36:59
|
相似题推荐
解答题-证明题
|
较难
(0.4)
解题方法
【推荐1】设椭圆
的离心率为
,左、右焦点分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84d316b10430afac5b0c065f31e1b2c.png)
,点D在椭圆C上,
的周长为
.
(1)求椭圆C的标准方程;
(2)过圆
上任意一点P作圆E的切线l,若l与椭圆C交于A,B两点,O为坐标原点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84d316b10430afac5b0c065f31e1b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df8816403d7f16b505ffc4a3574204d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2b42b76abb6aca31dabaaf2456825d.png)
(1)求椭圆C的标准方程;
(2)过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/106f1cf8723c50e1d7c8a355428b9f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
您最近一年使用:0次
【推荐2】已知点
是圆
上的任意一点,点
为圆
的圆心,点
与点
关于平面直角系的坐标原点对称,线段
的垂直平分线与线段
交于点
.
(1)求动点
的轨迹
的方程;
(2)若轨迹
与
轴正半轴交于点
,直线
交轨迹
于
两点,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816b9d281ced68ab793589714ada72c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480c4077a0e7e5cc4fbea3a2c772cfc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c83a127bd68ca35cdab3a2767161cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62abf8da486af7dd25cdd6daee5d46d.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/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐1】如图,已知椭圆的标准方程为
,斜率为k且过椭圆右焦点F的直线交椭圆于A、B两点.
![](https://img.xkw.com/dksih/QBM/2021/11/20/2855169756839936/2857699254460416/STEM/49af3674-17b4-45c5-b279-18b45e97623e.png?resizew=263)
(1)若
与
共线.
(i)求椭圆的离心率;
(ii)设P为椭圆上任意一点,且
(λ,μ∈R),当
时,求证:
.
(2)已知椭圆的面积
,当k=1时,△AOB的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://img.xkw.com/dksih/QBM/2021/11/20/2855169756839936/2857699254460416/STEM/49af3674-17b4-45c5-b279-18b45e97623e.png?resizew=263)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad7ce915e732d42fdab42890b716c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e457fb5bbf58b821b2059575e28712c.png)
(i)求椭圆的离心率;
(ii)设P为椭圆上任意一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bca4c0ab83a3ca3b0ebf03281be74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f5b26a534cd57031f87deed44ccc76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7590de85fbde1728e65193b933a82bf8.png)
(2)已知椭圆的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62c6f18dd8b0c2706a1891e10135923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c3f647d5c34fa92a5034089d14ef32.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知椭圆
的左右焦点
,其离心率为
,点
为椭圆上的一个动点,
内切圆面积的最大值为
.
(1)求
的值;
(2)若
是椭圆上不重合的四个点,且满足
,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/4e74c571dc3c44e580496bd5a0e23010.png)
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/944f17d02d6b404794b3ebe448092b56.png)
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/ec55aaba8c3546cda6da48c5facf998c.png)
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/f2ce371f7eca41a99d29e7e575a58bd4.png)
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/0662038cbc4640db980c4bbe702deac4.png)
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/72849ed9fb4149fe8d795f579ab6bf5c.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/39dd07d4f132407d8fe77dc4f145c9fb.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/1/11/1572426830594048/1572426836803584/STEM/0b45b247aa754e98b8524fee6625c957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623db6997e47be37eacb2789e0accb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cacb4ba635f8c1de7a7c1c3ead9daf7.png)
您最近一年使用:0次