名校
解题方法
1 . 平面上,直线
和
相交于点
,它们的夹角为
.已知动点
到直线
与
的距离之积为定值
,动点
的轨迹记为曲线
.我们以
为坐标原点,以直线
与
夹角的平分线为
轴,建立直角坐标系,如图.
(1)求曲线
的方程;
(2)当
,
时,直线
与曲线
顺次交于A、B、C、D四点,求证:
;
(3)当
,
时,是否存在直线
与曲线
只有A、B、C三个不同公共点(点B在线段
上),使得
?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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267572d2dff2dc38cf9251b7f33a3e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/da9ecfc9d5e1ff0c363f93e258e4679b.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/1dde8112e8eb968fd042418dd632759e.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/d13bd123-b121-4911-9e9f-fed6d236674d.png?resizew=303)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.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/ea53167e60459eac1b64c734a3f1b48b.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c990597f83d248eb36d57d86508c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e98a8e304d4e4654d6f538e8b01039b.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d514783895850481ebcb10d8b8354884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2 . 已知椭圆
:
,
,
为左右焦点,直线l过左焦点
与椭圆交于A,B两点,其中A在第一象限,记
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/2407d664-f5bd-480f-b43b-0084f5d2156c.png?resizew=173)
(1)若椭圆
的离心率为
,三角形
的周长为6,求椭圆
的方程;
(2)求证:
;
(3)直线
与椭圆交于另一点
,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57654bf131df03b31d3d11b5b656c73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57bb18755127be041d346444a4743e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe197f95a36f68ee80f69ff5f4a26970.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/26/2407d664-f5bd-480f-b43b-0084f5d2156c.png?resizew=173)
(1)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227fb6f5f485e12ddad01ef7cb1e06d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a665b04ba8406d1f55bebb0cb7389c.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72404eb522c6cc692757b0855c2df865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708d0e76f524d0e8a48db01392faac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71eda28755639d00f9d24b95679d9496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de82aff5049dce8a3d56291dc2ae4af.png)
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3 . 已知双曲线H:
的左、右焦点为
,
,左、右顶点为
,
,椭圆E以
,
为焦点,以
为长轴.
(1)求椭圆E的离心率;
(2)设椭圆E交y轴于
,
,过
的直线l交双曲线H的左、右两支于C,D两点,求
面积的最小值;
(3)设点
满足
.过M且与双曲线H的渐近线平行的两直线分别交H于点P,Q.过M且与PQ平行的直线交H的渐近线于点S,T.证明:
为定值,并求出此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1892b7c3cd7bea116f532f66fba44662.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/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
(1)求椭圆E的离心率;
(2)设椭圆E交y轴于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f2baab31438ea8290e1a309e74a187.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e0db273061d0331e4e5da9ff1e955e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c689487de9876b59e1f14a0c4140ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b5bdfe08a7bb88aab89d65ff01863c.png)
您最近一年使用:0次
4 . 已知正整数
,函数
.
(1)若
,
,
,
,
在
上严格增,求实数t的最小值;
(2)若
,
,
,
,
在
处有极值,函数
有3个不同的零点,求实数m的取值范围;
(3)若函数
的导函数
恰有
个零点
(
,2,…,k),满足
,求证:
在
上严格增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2c91611d2411474b94020434befbde.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa69dde104dcf963e67647e801e0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3299d1d394efc1381671b1632e6e87e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6bb11629d27b032bd757c348c95e8c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa69dde104dcf963e67647e801e0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3096521d50a8baaa018ebc9f25ec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c8d0474f7d81ef8dbefaacfd5afe7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc046a7b475b5130da69bf537226ec8.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2aa89da57b35c4f8d4a0783943415b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f2c29c3fa9a439ec37ff47048aa03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03eaad42260d22a743005c0cd43cd59.png)
您最近一年使用:0次
解题方法
5 . 某苗圃有两个入口A、B,
,欲在苗圃内开辟一块区域种植观赏植物,现有150株树苗放在P处,已知
,
,以AB所在直线为x轴,AB中点为原点建立直角坐标系.计划将树苗种在以
,
,
,
为顶点的矩形内呈15列10行等距排列.
(1)种在点
处的树苗应通过哪个入口运输路程较短?
(2)能否在苗圃内确定一条界线,使位于界线一侧的树苗沿PA运输较近,而另一侧的树苗沿PB运输较近?若能,求出这条界线;若不能,说明理由.
(3)有多少株树苗沿PB运输较近?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86eaac8863f15168b2d416a8b105bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f84bb093acbca9daf14d5146743d44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de949749cd49269278987a3c62594215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333019fd1f1336dd02c0579ecc114d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae0935c251f0a684e498c286f6138b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6b740cd2e0904994fd655983348f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ea9c86a4cc05d5c95c134edb874e7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/83d6de7f-78a1-4bf3-a052-cf1a82f19600.png?resizew=176)
(1)种在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c293fdb849822d49c621971e47f6627f.png)
(2)能否在苗圃内确定一条界线,使位于界线一侧的树苗沿PA运输较近,而另一侧的树苗沿PB运输较近?若能,求出这条界线;若不能,说明理由.
(3)有多少株树苗沿PB运输较近?
您最近一年使用:0次
名校
6 . 在研究函数过程中,经常会週到一类形如
为实常数且
的函数,我们称为一次型分式函数.请根据条件完成下列问题.
(1)设
是实数,函数
,请根据
的不同取值,讨论函数
的奇偶性,并说明理由;
(2)设
是实数,函数
.若
成立的一个充分非必要条件是
,求
的取值范围;
(3)设
是实数,函数
,若存在区间
,使得
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9796db5f297d4023eac8d1aa4739c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b744e7cd7496125a9bcd6b756d09ebff.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1944af8ede16275cdcbe721a81870d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aade587301e484fe76bdf87e6d5b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47f8d234c1df11e957b9bd7d3f2da47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe2a076aa933bf55763c67b8734b1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af24aeacd2576456cc192826ecd5b107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcc3c97c6d73f7ef44b90ec6f3065ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
7 . 已知直线
与椭圆
有且只有一个公共点.
的方程;
(2)是否存在实数
,使椭圆
上存在不同两点
、
关于直线
对称?若存在,求
的取值范围;若不存在,请说明理由;
(3)椭圆
的内接四边形
的对角线
与
垂直相交于椭圆的左焦点,
是四边形
的面积,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9213827b4a732bf7b8f92d4fa3c0e502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54976e19a9f87dfdd3b1c0eccac18aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/ecf226a0e9621cd10eb03edfc7e4f332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2023-11-14更新
|
522次组卷
|
4卷引用:上海市复旦大学附属中学2023-2024学年高二上学期期中数学试题
上海市复旦大学附属中学2023-2024学年高二上学期期中数学试题上海市大同中学2023-2024学年高二下学期期中考试数学试卷(已下线)专题11圆锥曲线单元复习与测试(21个考点25种题型)-【寒假自学课】2024年高二数学寒假提升学与练(沪教版2020)(已下线)微考点6-2 圆锥曲线中的弦长面积类问题
名校
8 . 已知定义在
上的函数
,其导函数为
,记集合
为函数
所有的切线所构成的集合,集合
为集合
中所有与函数
有且仅有
个公共点的切线所构成的集合,其中
,
.
(1)若
,判断集合
和
的包含关系,并说明理由:
(2)若
(
),求集合
中的元素个数:
(3)若
,证明:对任意
,
,
为无穷集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e290a420338f17160641e7d081a868f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1044dcf4fba551e1b7fbfeb895ea08c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925be8927ea9b4f42bf9519eb8c55405.png)
您最近一年使用:0次
2023-11-14更新
|
419次组卷
|
2卷引用:上海市建平中学2024届高三上学期期中数学试题
名校
解题方法
9 . 已知A是直线
和曲线
的一个公共点.
(1)若直线
与曲线
相切于点A,求
的值;
(2)设点A的横坐标为
,当
在区间
上变化时,求
的最大值;
(3)若直线
与曲线
另有一个不同于A的公共点
,求证:线段
中点的纵坐标大于1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3016baf1a9ce777f16ea9ce469b2510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9136761fe20df42369e5bf110229e9.png)
(1)若直线
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设点A的横坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94beb083d48ef4a8e0556dc1e2339c7b.png)
(3)若直线
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
10 . 已知椭圆E的方程为
,
与
是E的左右两个焦点,
是E的下顶点.
(1)设斜率为1的直线l过点
,且与E交于M,N两点,求弦
的长;
(2)若E上一点P满足
,求三角形
的面积;
(3)设椭圆上一点
,求证:射线
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ab5ed3dd54f42da747b01afdb7b031.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/7e10de2c38bc918ae9e1ce62a5c70099.png)
(1)设斜率为1的直线l过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若E上一点P满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aaeb8b71e4552c1ce740f5497bd13f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c680749eda007641fdaa9f9fdc103700.png)
(3)设椭圆上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2110da40af010a6c7d69b661ca4f8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8865ce43941563e187aa89e7ff2372c.png)
您最近一年使用:0次