2011·福建厦门·一模
名校
解题方法
1 . 已知椭圆方程为
,射线
与椭圆的交点为M,过M作倾斜角互补的两条直线,分别与椭圆交于A,B两点(异于M).
(1)求证:直线AB的斜率为定值;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18917538897b387f347949edda997b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cec0c5f8fff922f34aaf4ac3cc0fa1.png)
(1)求证:直线AB的斜率为定值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3fd448d8ccc7d9aed59605bba842e2.png)
您最近一年使用:0次
2019-02-02更新
|
385次组卷
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5卷引用:2017届山西省怀仁县第一中学高三上学期期末考试数学(文)试卷
2 . 过点C(0,1)的椭圆
的离心率为
,椭圆与x轴交于两点
、
,过点C的直线l与椭圆交于另一点D,并与x轴交于点P,直线AC与直线BD交于点Q
.![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/fd7a72ba-6850-46a6-b6dc-c0aa6f8a134e.png?resizew=221)
(I)当直线l过椭圆右焦点时,求线段CD的长;
(Ⅱ)当点P异于点B时,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0348e8cdd04a08e36cf940aa4bbd95b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3160fc73f2a90ae4a1a97351ab2673b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc12ddee4f04023a5b83402e4eb790ca.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/fd7a72ba-6850-46a6-b6dc-c0aa6f8a134e.png?resizew=221)
(I)当直线l过椭圆右焦点时,求线段CD的长;
(Ⅱ)当点P异于点B时,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9cbc334d6f4b6f92ffdeba67ca441b8.png)
您最近一年使用:0次
2019-01-30更新
|
2568次组卷
|
7卷引用:2013届山西省康杰中学高三第八次模拟文科数学试卷
(已下线)2013届山西省康杰中学高三第八次模拟文科数学试卷2011年普通高中招生考试四川省市高考文科数学(已下线)2012届广东省湛江市第二中学高三下学期第六次月考考试文科数学2015-2016年北大附中河南分校高二宏志班上抽考文数学卷辽宁省朝阳市喀喇沁左翼蒙古族自治县蒙古族高级中学卓南分校2019届高三第五次模拟数学(理)试题(已下线)第五篇 向量与几何 专题5 调和点列 微点2 调和点列(二)(已下线)专题08 圆锥曲线 第二讲 圆锥曲线中的定点、定直线与定值问题(分层练)
2010·山东泰安·一模
3 . 已知椭圆
的一个焦点与抛物线
的焦点
重合,且椭圆短轴的两个端点与
构成正三角形.
(1)求椭圆的方程;
(2)若过点
的直线
与椭圆交于不同两点
,试问在
轴上是否存在定点
,使
恒为定值? 若存在,求出
的坐标及定值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428c4f87eada4e504fce8cc91d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求椭圆的方程;
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468f1f292d17a3a40ff1cafa0a163552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4760140a8673ead1a68737f3351fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2019-01-30更新
|
1208次组卷
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8卷引用:山西省大同市2022-2023学年高二上学期期末数学试题
山西省大同市2022-2023学年高二上学期期末数学试题(已下线)山东省泰安市2010高三一模(数学理)(已下线)2011届云南省蒙自高中高三1月月考数学理卷2015届山东省实验中学高三第一次模拟文科数学试卷2015-2016学年云南玉溪一中高二下期中理科数学试卷人教A版高中数学 高三二轮 专题17 分类讨论 转化与化归思想 测试苏教版高中数学 高三二轮 专题28 分类讨论思想 转化与化归思想(已下线)重难点突破11 圆锥曲线存在性问题的探究(五大题型)
名校
4 . 已知椭圆C的焦点为(
,0),(
,0),且椭圆C过点M(4,1),直线l:
不过点M,且与椭圆交于不同的两点A,B.
(1)求椭圆C的标准方程;
(2)求证:直线MA,MB与x轴总围成一个等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c194711803ea093ff6ae78984fc7f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b12efb03327f461e868b2ea433f9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
(1)求椭圆C的标准方程;
(2)求证:直线MA,MB与x轴总围成一个等腰三角形.
您最近一年使用:0次
2019-01-30更新
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325次组卷
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2卷引用:【全国百强校】山西大学附属中学2018-2019学年高二下学期2月模块诊断 数学试题
5 . 已知抛物线
:
(
)的焦点是椭圆
:
(
)的右焦点,且两曲线有公共点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54917af333f012428062b5162be9faa5.png)
(1)求椭圆
的方程;
(2)
为坐标原点,
,
,
是椭圆
上不同的三点,并且
为
的重心,试探究
的面积是否为定值.若是,求出这个定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54917af333f012428062b5162be9faa5.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
6 . 已知椭圆
的右焦点为
,离心率为
.
(1)求椭圆的方程;
(2)设直线
与椭圆相交于
,
两点,
,
分别为线段
,
的中点,若坐标原点
在以
为直径的圆上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-03-06更新
|
504次组卷
|
2卷引用:山西大学附属中学2017-2018学年高二4月月考数学(理)试题
名校
解题方法
7 . 已知点
在椭圆
上,
为椭圆
的右焦点,
、
分别为椭圆
的左、右两个顶点.若过点
且斜率不为
的直线
与椭圆
交于
、
两点,且线段
、
的斜率之积为
.
(1)求椭圆
的方程;
(2)已知直线
与
相交于点
,证明:
、
、
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.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://staticzujuan.xkw.com/quesimg/Upload/formula/bbe61d39d080872caa8973a70a3b4955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448eb7d301baa90fe59b05761830f81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b06b75fb4e379ff3b99e68f40136cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
您最近一年使用:0次
2018-03-02更新
|
827次组卷
|
2卷引用:山西省晋城市2018届高三上学期第一次模拟考试数学(文)试题
解题方法
8 . 已知椭圆
过
,且离心率为
.
(1)求椭圆
的方程;
(2)过右焦点
的直线
与椭圆交于
两点,
点坐标为
,求直线
的斜率之和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed92a36c361d212661d764770e2831b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ab719df4b08d983743834d6d2bbc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342ba1917a6b854ad111a3e6f5514934.png)
您最近一年使用:0次
名校
9 . 已知椭圆C:
上的点到左焦点的最短距离为
,长轴长为
.
(1)求椭圆
的标准方程;
(2)过椭圆
的右焦点作斜率存在且不等于零的直线与椭圆
相交于
两点,问:在
轴上是否存在定点
,使得
为定值?若存在,试求出点
的坐标和定值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0e2297e289632ffc211bd20e2e772e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e420d889001a6374c80ed50a1406b135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6bfd94f6f2f41148d785f6b8a0181d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecdae00f4e7c0a32253054cba55d626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9af8c3fbdb748fd11e2423de063616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6828cd2fa20297a05f1cd6dfe25fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
您最近一年使用:0次
2018-01-28更新
|
501次组卷
|
4卷引用:山西省朔州市怀仁市大地学校2020-2021学年高二上学期第四次月考数学(文)试题
10 . 设抛物线
:
(
)的焦点为
,准线为
,
,且
在第一象限,已知以
为圆心,
为半径的圆
交
于
,
两点(
在
的上方),
为坐标原点.
(1)若
是边长为
的等边三角形,且直线
:
(
)与抛物线
相交于
,
两点,证明:
为定值;
(2)记直线
与抛物线
的另一个交点为
,若
与
的面积比为3,证明:直线
过点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3b61b75052082d32b4f395ec629d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35cff59ce4c8b141885be9fe2aec9188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e064cdf6f3012f2ea12d8c6411413a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.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/6d7b2fe01a33c4825f9974ed9663a99c.png)
(2)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4ee6ee1738436e3dab211bfb558d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd2679d2d681af9479aeca11f8faf10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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