名校
1 . 有一凸透镜其剖面图(如图)是由椭圆
和双曲线
的实线部分组成,已知两曲线有共同焦点M、N;A、B分别在左右两部分实线上运动,则
周长的最小值为:
![](https://img.xkw.com/dksih/QBM/2017/4/19/1668989218242560/1669072982794240/STEM/779fed06b9e94b65a9d1e255f9f6a77d.png?resizew=208)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f392d61933568d27a27568c6298365bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c128084a819612b0367450f0961238b0.png)
![](https://img.xkw.com/dksih/QBM/2017/4/19/1668989218242560/1669072982794240/STEM/705ebfe6e3bd49fca461e0e54ad4a97a.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2017/4/19/1668989218242560/1669072982794240/STEM/779fed06b9e94b65a9d1e255f9f6a77d.png?resizew=208)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2017-04-19更新
|
4944次组卷
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4卷引用:2016-2017学年湖北省襄阳市四校(襄州一中、枣阳一中、宜城一中、曾都一中)高二下学期期中联考数学(文)试卷
2 . 如图,过椭圆
:
的左右焦点
分别作直线
,
交椭圆于
与
,且
.
![](https://img.xkw.com/dksih/QBM/2017/4/12/1664255906832384/1664822244769792/STEM/b51c9995895542fdabd2f015644e561d.png?resizew=163)
(1)求证:当直线
的斜率
与直线
的斜率
都存在时,
为定值;
(2)求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
![](https://img.xkw.com/dksih/QBM/2017/4/12/1664255906832384/1664822244769792/STEM/b51c9995895542fdabd2f015644e561d.png?resizew=163)
(1)求证:当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2017-04-13更新
|
1595次组卷
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3卷引用:2017届广西桂林市、崇左市、百色市高三下学期第一次联合模拟(一模)考试理数试卷
3 . 在平面直角坐标系
中,椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的一个焦点为
,
为椭圆上的一点,
的面积为
.
(1)求椭圆
的标准方程;
(2)若点
在圆
上,是否存在过点
的直线
交椭圆
于点
,使
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4a7482cb81b34df5a11807b8136a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fd8fa3a3a3665071cb3b897b15cfb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db66c31b1a91f8b8d8dada43cdacfa78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1c574ec18378e4f0c55f96da7bb10b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
4 . 已知椭圆
经过点
,且离心率为
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)设
是椭圆上的点,直线
与
(
为坐标原点)的斜率之积为
.若动点
满足
,试探究是否存在两个定点
,使得
为定值?若存在,求
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de35bbc9c4c1d8e130b9b2ebe5c57bca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e9053d735be4b401b37a5c4692d72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b544d6780116819230e2fb036d4d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
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2017-03-20更新
|
1090次组卷
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5 . 已知圆
与圆
,以圆
的圆心分别为左右焦点的椭圆
经过两圆的交点.
(1)求椭圆
的方程;
(2)直线
上有两点
在第一象限)满足
,直线
与
交于点
,当
最小时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a96c8fd0e49c8016b91eb60def6d26e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdbe9b243aa97c0e872331876313bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e93309062496a9c6d3dead5a9fa59c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce28f0feb4464bd3ee15f52e2643191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1079bbf24d6bf95031e4372d176a958e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12a030f853a383a50fd889486c9f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03526fddc48f9f7298afc3da414c2e31.png)
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2017-03-18更新
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900次组卷
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6 . 已知椭圆
的离心率为
,且经过点
是椭圆的左、右焦点.
(1)求椭圆
的方程;
(2)点
在椭圆上运动,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efaf0d4ada65c3e3b5d3db6ab7745af2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3e995ceae5d6e21cfd8c380fc2b9a.png)
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7 . 设椭圆
与直线
相交于
,
两点,若在椭圆上存在点
,使得直线
,
斜率之积为
,则椭圆离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b889efe020137b112bfafaa8e0becda4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 椭圆
,
为椭圆的左、右焦点,
为坐标原点,点
为椭圆上一点,
,且
成等比数列,则椭圆的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882651b776851f3f0665de12da6ed47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1fbe9c1be62cb2d5d775e32b815ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c275197cbbde1e881c2ca75d02cc09.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-03-02更新
|
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3卷引用:2017届云南省云南师范大学附属中学高三高考适应性月考(五)文数试卷
名校
9 . 已知椭圆
的离心率
,右焦点到右顶点的距离为1.
(1)求椭圆
的方程;
(2)
两点为椭圆
的左右顶点,
为椭圆上异于
的一点,记直线
,
斜率分别为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb4cda8c303228a587b02d47f6dad53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb4cda8c303228a587b02d47f6dad53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5778fea30094d4cdcbc098eb04ed643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b5e95eecb21dfbcaf012a4fc5dfaa9.png)
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2017-02-22更新
|
1166次组卷
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3卷引用:2016-2017学年四川省资阳市高二上学期期末考试数学(文)试卷
10 . 已知直线
交椭圆
于
、
两点,椭圆的右焦点为
点,则
的周长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60e42d256056bb6f6bb4434d27a49b3.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
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2017-02-22更新
|
1281次组卷
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2卷引用:2016-2017学年四川省资阳市高二上学期期末考试数学(文)试卷