1 . 已知椭圆
的左、右焦点分别为
、
,四个顶点分别为
、
、
、
,且四边形
是边长为2的正方形,动点
满足
,连接
,交椭圆于点
.
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/1e4ab365986a4827b97a852a7c87512e.png)
(Ⅰ)求椭圆的方程;
(Ⅱ)证明:
为定值;
(Ⅲ)试问
轴上是否存在异于点
的定点
,使得以
为直径的圆恒过直线
、
的交点,若存在,求出点
的坐标;若不存在请说明理由.
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/238ff3526143409e836cc95e9db23a12.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/230b5a1fa41141a2aa7ab65bea6ebda5.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/55174b6d28d3472ba1f8c35e2b53d763.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/3df0a1716723487887cdfbc9d94e519d.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/c0ecac46db564651884352cef72376f5.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/c074acf7e74045c18ca2e3d3735867f8.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/4550fca622de4453b1294bf1c865577d.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/010ea0df9bc7474294caabd945b9637a.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/9a52910d90c747d898847712c216bf94.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/79e47fe5dee74973a8376d04533852c8.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/c3c1a588958a494a951721dc38a9bdb2.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/3d4244c18cef47209836cd6cd5a81bcc.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/1e4ab365986a4827b97a852a7c87512e.png)
(Ⅰ)求椭圆的方程;
(Ⅱ)证明:
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/2260f73467a643f697f96611276474c1.png)
(Ⅲ)试问
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/4812b379ee1241669294780b3faf9142.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/c074acf7e74045c18ca2e3d3735867f8.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/97aac2e61650478fbb2d522f19ec340c.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/1fc3c59ee8e6418fa408c6767b07c66f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/f52e9bc65a2946798b3b01d86764bec1.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/cda87ad7a2c7470f825bb1c9b5fa10f5.png)
![](https://img.xkw.com/dksih/QBM/2016/4/20/1572599536279552/1572599542358016/STEM/97aac2e61650478fbb2d522f19ec340c.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
的离心率为
,上顶点为
,点
在
上,点
,
的最大面积等于
.
(1)求
的方程;
(2)若直线
与
交于另一点
,直线
,
分别与
轴交于点
,
,试判断
是否为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/f1d2fea26b27f15670b976451a013863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7116071164cdc45f5d312a437c68bf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/2562727c414103b1d3f71f5205ab0b96.png)
您最近一年使用:0次
2018-01-13更新
|
817次组卷
|
6卷引用:福建省泉州市2018届高中毕业班1月单科质量检查数学理试题
3 . 已知动圆
过定点
,并且内切于定圆
.
(1)求动圆圆心
的轨迹方程;
(2)若
上存在两个点
,(1)中曲线上有两个点
,并且
三点共线,
三点共线,
,求四边形
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0430d333cd603bc096ca3cb592ab6e.png)
(1)求动圆圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d676ff4bf2f8e136835a0a702ebe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c485045b8cc718cfabee23fe984f82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7555f635da615b09b7e2f08ddbeaf1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99393efa04579f3db5cf4f7e319f0440.png)
您最近一年使用:0次
2017-04-13更新
|
637次组卷
|
2卷引用:福建省泉州市晋江学校2023-2024学年高二上学期第二次月考数学试题
4 . 如图,椭圆
左、右焦点分别为
,上顶点
轴负半轴上有点
,满足
,且
,若过
三点的圆与直线
相切.
![](https://img.xkw.com/dksih/QBM/2016/5/5/1572619316486144/1572619323031552/STEM/4bad9609-272e-40eb-b4b4-6829b394ca3e.png?resizew=172)
(Ⅰ)求椭圆
的方程;
(Ⅱ)若
为椭圆上的点,且直线
垂直于
轴,直线
与
轴交于点
,直线
与
交于点
,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7723a7b8eeb81c7b46ac6cb7ac8e0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43af1446cca31f5527b65a8bcbfc0d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8174c73ce27865ba2ec48d337be275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a506e8f36e7e5fd80d164a73f51f70c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d202fa5d5c7abf2020374eabb93de5.png)
![](https://img.xkw.com/dksih/QBM/2016/5/5/1572619316486144/1572619323031552/STEM/4bad9609-272e-40eb-b4b4-6829b394ca3e.png?resizew=172)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec1f8a14b2c1570aa076166017ccf33.png)
您最近一年使用:0次
5 . 在平面直角坐标系
中,点
到两点
的距离之和等于4,设点
的轨迹为
.
(1)写出曲线
的方程;
(2)设直线
与曲线
交于A、B两点,
为何值时,
,此时
的值为多少?
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/f8c01c92f0d540f48693963255321cf6.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/481a972a4f734ae9abc2e6d9e70b657a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/53c5f8b6400947d2b530a596209442d0.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/481a972a4f734ae9abc2e6d9e70b657a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
(1)写出曲线
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
(2)设直线
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/165914d03fb340158cad4a9fac8599d1.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/50951a7163fd40e59675c66b0696dc6a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/d120abc7835d4b13bb99e0f9b4077043.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/ee48e84639dd494582b88d9fb5c41a15.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467997007872/STEM/ae22ed73454c423f9502340b04d8f477.png)
您最近一年使用:0次
6 . 如图,已知抛物线
:
的准线为直线
,过点
的动直线
交抛物线
于
,
两点.
![](https://img.xkw.com/dksih/QBM/2015/6/19/1572131505496064/1572131512008704/STEM/7fd907bbdd5c4c4e93f35a05c9c7b355.png)
(Ⅰ)求抛物线
的方程;
(Ⅱ)若以线段
为直径的圆恒过抛物线
上的某定点
(异于
两点),求
的值和点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da6948da77a1f269931ca9ef8722325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adeb13e89fd6dfdbe5b86e85bf20cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2015/6/19/1572131505496064/1572131512008704/STEM/7fd907bbdd5c4c4e93f35a05c9c7b355.png)
(Ⅰ)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)若以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
7 . 已知椭圆
:
(
)的长半轴长为2,离心率为
,左右焦点分别为
,
.
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571958643089408/1571958649151488/STEM/e2bcfe5045c74278b779add9eedbf6ee.png)
(Ⅰ)求椭圆
的方程;
(Ⅱ)若直线
与椭圆
交于
,
两点,与以
,
为直径的圆交于
,
两点,且满足
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9374d3462754e846cbb0f7dd5fd28277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754c001935309520f7dc463fcb7fcd87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fffd834842a7d0457310c4b3f15c42d.png)
![](https://img.xkw.com/dksih/QBM/2015/1/12/1571958643089408/1571958649151488/STEM/e2bcfe5045c74278b779add9eedbf6ee.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a480dfe442a98e87141157e160fbe7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4103acc65fe4114a67e3e1c8f4f618e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次