已知椭圆
的离心率
,且经过点
.
(1)求椭圆E的方程;
(2)设直线
与椭圆E交于A,B两点,且椭圆E上存在点M,使得四边形
为平行四边形.试探究:四边形OAMB的面积是否为定值?若是定值,求出四边形
的面积;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783750d7a4e8dfd0250ad59304c31491.png)
(1)求椭圆E的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6c989fd224866658230526892e2bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6c989fd224866658230526892e2bcb.png)
23-24高三上·湖北·开学考试 查看更多[4]
湖北省新高考联考协作体2023-2024学年高三上学期9月起点考试数学试题(已下线)重难专攻(九)?圆锥曲线中的定值问题(B素养提升卷)(已下线)重难点突破07 圆锥曲线三角形面积与四边形面积题型全归类(七大题型)吉林省延边第二中学2023-2024学年高二上学期第二次阶段检测数学试卷
更新时间:2023-09-06 21:36:58
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相似题推荐
【推荐1】已知椭圆
经过点
,以原点为圆心,椭圆短半轴长为半径的圆经过椭圆的焦点.
(1)求椭圆
的方程;
(2)设过点
的直线
与椭圆
相交于
、
两点,试问在
轴上是否存在一个定点
,使得
恒为定值?若存在,求出该定值及点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8da36e3081bfe5d32c9ec70be4da3da.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/6356488b921e900ad8f0448d20e918e6.png)
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【推荐2】已知椭圆
,离心率
,过点
.
(1)求
的方程;
(2)直线
过点
,交椭圆于
、
两点,记
,并设直线
、直线
的斜率分别为
、
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.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/74c92e835e6811cdf63caf16ed19af9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c023f4b501684abd869b36d6e6c7f21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279563c3c055777ce1aa369a2ef54aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb6ce4b2e186bae81b561b4d958e9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18abc8b447e4a6ff19e6bd4a30cb7b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06bd042cab64ba961e54d75f69d12dcf.png)
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【推荐1】已知O为坐标原点,椭圆C:
的焦距为
,离心率
,过点
作两条直线
,
,直线
交椭圆于A,B两点,直线
交椭圆于M,N两点,A,B,M,N四点均不在坐标轴上,且A,O,M三点共线.
(1)求椭圆C的标准方程.
(2)记直线AM与BN的斜率分别为
,
且
,判断是否存在非零常数
,使得
.若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(1)求椭圆C的标准方程.
(2)记直线AM与BN的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18edcabc56e8cf75047c2fab6f7f341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】已知椭圆G的离心率为
,其短轴的两端点分别为A(0,1),B(0,-1).
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572096979369984/1572096984760320/STEM/8c4a9771a45b48eeba0f9f2765c83aa7.png)
(Ⅰ)求椭圆G的方程;
(Ⅱ)若C,D是椭圆G上关于y轴对称的两个不同点,直线
与
轴分别交于点
.试判断以
为直径的圆是否过定点A,如经过,求出定点坐标;如不过定点,请说明理由.
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572096979369984/1572096984760320/STEM/ac062ca3618c459285957642814758ba.png)
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572096979369984/1572096984760320/STEM/8c4a9771a45b48eeba0f9f2765c83aa7.png)
(Ⅰ)求椭圆G的方程;
(Ⅱ)若C,D是椭圆G上关于y轴对称的两个不同点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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【推荐1】如图,已知椭圆
:
的离心率为
,长轴长为4,
、
分别是椭圆
的左、右顶点,过右焦点
且斜率为
的直线
与椭圆
相交于
,
两点.
![](https://img.xkw.com/dksih/QBM/2020/5/8/2458329576873984/2459004440715264/STEM/364c589e47c04d0aa250c805ed445116.png?resizew=218)
(Ⅰ)求椭圆
的标准方程;
(Ⅱ)记
、
的面积分别为
、
,若
,求
的值;
(Ⅲ)设线段
的中点为
,直线
与直线
相交于点
,记直线
、
、
的斜率分别为
、
、
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfbfcfe248439929f0b33f712471b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2020/5/8/2458329576873984/2459004440715264/STEM/364c589e47c04d0aa250c805ed445116.png?resizew=218)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2faf3bebb0ba48c18fed0cab7f045a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e76ada58b3aa702a2f0196b608c9da.png)
![](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/76ffeb451aad6781bbe3b6b610d230c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(Ⅲ)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be9ff5bac9515ab7bcd1a7adbb494c0.png)
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【推荐2】已知点A(−2,0),B(2,0),动点M(x,y)满足直线AM与BM的斜率之积为−
.
(1)求M的轨迹;
(2)过坐标原点的直线交M的轨迹于P,Q两点,点P在第一象限,PE⊥x轴,垂足为E,连结QE并延长交M的轨迹于点G.
①证明:
是直角三角形;
②求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求M的轨迹;
(2)过坐标原点的直线交M的轨迹于P,Q两点,点P在第一象限,PE⊥x轴,垂足为E,连结QE并延长交M的轨迹于点G.
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a0a6891259bf27be2280c6b6ba7430.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a0a6891259bf27be2280c6b6ba7430.png)
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