1 . 已知曲线
上任意一点到点
的距离与到直线
距离之比为
,在曲线
上取
两点,使得线段
的中点
在圆
上.
(1)求曲线
的方程:
(2)若
为坐标原点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e117f70e24d9d5fb2ed7f43eb87d7d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da311e04b37bfd1738a879db46a90d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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2 . 椭圆
,已知
、
、
、
中恰有三个点在椭圆
上,圆
的切线
与椭圆
相交于
、
两点,与
轴交于点
,
和
的面积分别为
和
.(O是坐标原点)
(1)求椭圆
的标准方程;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e48d1edbfb6a5a48f9a95551d1dbc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e29b9f30c5e3b95ebf633e079121563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22400cdc6abcb8420d80a7bfeb530336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72babd92b33b44fa45d0d559c03f617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc3e47a358860345e74450ce2af9f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b1cb1359bcb061ce7737fb7e1b34f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c8561afa0f1454ea382a625d000a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a3bb07e594e01412d6ae0cff9a11e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
3 . 如图,某市有相交于点
的一条东西走向的公路
与一条南北走向的公路
,有一商城
的部分边界是椭圆的四分之一,这两条公路为椭圆的对称轴,椭圆的长半轴长为2,短半轴长为1(单位:千米).根据市民建议,欲新建一条公路
,点
,
分别在公路
,
上,且要求
与椭圆形商城
相切,当公路
长最短时,
的长为( )
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854684129165312/2856282149724160/STEM/d118b280-0731-4e98-a812-561d973fb3bd.png?resizew=278)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854684129165312/2856282149724160/STEM/d118b280-0731-4e98-a812-561d973fb3bd.png?resizew=278)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-22更新
|
210次组卷
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2卷引用:浙江省湖州市三贤联盟2021-2022学年高二上学期期中联考数学试题
名校
解题方法
4 . 如图,椭圆
的离心率为
且经过点
.
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852633527967744/2856636691734528/STEM/62e2891daeb54addba0ddfe0a8246e42.png?resizew=239)
(1)求椭圆
的方程;
(2)已知圆:
,过点
作圆
的切线
,交椭圆于另一个点
,求
的面积最大值,并求出此时圆的半径
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852633527967744/2856636691734528/STEM/62e2891daeb54addba0ddfe0a8246e42.png?resizew=239)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知圆:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a253dc0b555dc304653876d8fe9796c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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名校
5 . 如果方程
表示焦点在y轴上的椭圆,那么实数k的取值范围是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db1e7af6d2b0ae5873b4494739fc86c.png)
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2021-11-22更新
|
524次组卷
|
2卷引用:浙江省“七彩阳光”新高考研究联盟2021-2022学年高二上学期期中联考数学试题
6 . 如图,在直角坐标系
中,
是
轴上关于原点对称的两定点,且
,动点
到点
的距离是
,线段
的垂直平分线交
于点
,设动点
的轨迹为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/72b2fc87-1979-485a-bb12-368a6a2915d6.png?resizew=130)
(1)求曲线
的方程;
(2)已知
,若直线
交曲线
于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040d6732d32d552cb60f1a9430b67c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/72b2fc87-1979-485a-bb12-368a6a2915d6.png?resizew=130)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad492d5033448d419df9c9b75a71894e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2db8670de2b331dceb3df719ab2a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
7 . “
且
”是“方程
表示椭圆”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2085af2326d0e13a12d3db8dbb79f51.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分又不必要条件 |
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2021-11-21更新
|
835次组卷
|
6卷引用:浙江省湖州市三贤联盟2021-2022学年高二上学期期中联考数学试题
8 . 已知点A(-1,0),点P是⊙B:(x-1)2+y2=16上的动点.线段AP的垂直平分线与BP交于点Q.
(1)设点Q的轨迹为曲线C,求C的方程.
(2)过x轴上一动点R作两条关于x轴对称的直线
与
,设M,N分别是
,
与曲线C的交点且M,N不关于x轴对称,MN与x轴交于点S,
是否为定值?若是定值,请求出定值,若不是定值,请说明理由.
(1)设点Q的轨迹为曲线C,求C的方程.
(2)过x轴上一动点R作两条关于x轴对称的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8ebfb26398c70d0d9dbc342741df65.png)
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2021-11-13更新
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1226次组卷
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6卷引用:浙江省台州市书生中学2021-2022学年高二上学期第二次月考数学试题
浙江省台州市书生中学2021-2022学年高二上学期第二次月考数学试题云南师范大学附属中学2021-2022学年高二上学期期中考试数学试题吉林省长春外国语学校2021-2022学年高二上学期第二次月考数学试题(已下线)专题4.4 第一、二、三章(空间向量与立体几何、直线和圆的方程、圆锥曲线的方程)阶段检测(难)2.4直线与圆锥曲线的位置关系 综合培优卷-2021-2022学年高二上学期数学北师大版(2019)选择性必修第一册河南省顶尖名校2021-2022学年高二上学期第三次素养调研文科数学试题
9 . 已知椭圆
的焦距为2,O为坐标原点,F为右焦点,点
在椭圆上.
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849610704109568/2850558674870272/STEM/63f3130f-025e-401b-bdd5-0f60845c2a87.png?resizew=276)
(1)求椭圆的标准方程;
(2)若直线l的方程为
,AB是椭圆上与坐标轴不平行的一条弦,M为弦的中点,直线MO交l于点P,过点O与AB平行的直线交/于点Q,直线PF交直线OQ于点R,直线QF交直线MO于点S.
①证明:O,S,F,R四点共圆;
②记△QRF的面积为
,△QSO的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca480b220f3a3bce0753c2865f47000e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9d59d1d95dde445499c772a86207fc.png)
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849610704109568/2850558674870272/STEM/63f3130f-025e-401b-bdd5-0f60845c2a87.png?resizew=276)
(1)求椭圆的标准方程;
(2)若直线l的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
①证明:O,S,F,R四点共圆;
②记△QRF的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
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2021-11-13更新
|
1322次组卷
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4卷引用:浙江省温州市环大罗山联盟2021-2022学年高二上学期期中联考数学试题
浙江省温州市环大罗山联盟2021-2022学年高二上学期期中联考数学试题浙江省“七彩阳光”新高考研究联盟2021-2022学年高二上学期期中联考数学试题 (已下线)第46讲 解析几何中的四点共圆问题-2022年新高考数学二轮专题突破精练(已下线)第五篇 向量与几何 专题10 圆锥曲线中的四点共圆问题 微点1 圆锥曲线中的四点共圆问题(一)
名校
解题方法
10 . 已如椭圆
的点应为
,
,过
且不与
轴重合的直线
与椭圆相交于
,
两点,当直线
垂直于
轴时,
.
(1)求椭圆的标准方程;
(2)求△
面积的最大值,当△
面积最大时求其内切圆半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbee28c25d9e6096eaea3309bb07630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5acaa7461c3a6136408353875cbc5a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8532e552c307f0e06648a9272de143c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814075fa3e422ad4ab56227da16cf828.png)
(1)求椭圆的标准方程;
(2)求△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef419f0740dae5db5cc51675bc51afb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef419f0740dae5db5cc51675bc51afb.png)
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