解题方法
1 . 已知椭圆
过点
,
分别为椭圆C的左、右焦点且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/bc8d2ac0-fbb5-4154-b55d-353165a57a56.png?resizew=229)
(1)求椭圆C的方程;
(2)过P点的直线
与椭圆C有且只有一个公共点,直线
平行于OP(O为原点),且与椭圆C交于两点A、B,与直线
交于点M(M介于A、B两点之间).
(i)当
面积最大时,求
的方程;
(ii)求证:
,并判断
,
的斜率是否可以按某种顺序构成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8989cd07bd3d5f89627c3acb24c0a462.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/bc8d2ac0-fbb5-4154-b55d-353165a57a56.png?resizew=229)
(1)求椭圆C的方程;
(2)过P点的直线
![](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/707ea658f3a9359f5740d5aab48f7948.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb53c7cc8aac84b2ae3ef769bb46adb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
您最近一年使用:0次
2020-06-11更新
|
1703次组卷
|
7卷引用:山东省泰安市2020-2021学年高三上学期1月月考数学试题
山东省泰安市2020-2021学年高三上学期1月月考数学试题山东省潍坊市2020届高三模拟(二模)数学试题山东省平邑县第一中学2020届高三下学期第八次调研考试数学试题(已下线)专题十 平面解析几何-山东省2020二模汇编(已下线)数学-6月大数据精选模拟卷03(上海卷)(满分冲刺篇)(已下线)专题21 椭圆、双曲线、抛物线的几何性质的应用(讲)-2021年高三数学二轮复习讲练测(新高考版)(已下线)专题25 椭圆、双曲线、抛物线的几何性质的应用(讲)-2021年高三数学二轮复习讲练测(文理通用)
名校
2 . 已知椭圆
的上下两个焦点分别为
,过点
与
轴垂直的直线交椭圆
于
两点,
的面积为
,椭圆
的长轴长是短轴长的
倍.
(1)求椭圆
的标准方程;
(2)已知
为坐标原点,直线
与
轴交于点
,与椭圆
交于
两个不同的点,若存在实数
,使得
,求
的取值范围,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef404abca1f78da130a38849f58559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5585a42c8f07ad90b94ace9db3d78994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74681aa6901213e672154f38ead0fa6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-12-03更新
|
748次组卷
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3卷引用:山东省潍坊市寿光现代中学2019-2020学年高二上学期12月月考数学试题
名校
3 . 设椭圆的对称中心为坐标原点,其中一个顶点为
,右焦点
与点
的距离为2.
(1)求椭圆的方程;
(2)是否存在经过点
的直线
,使直线
与椭圆相交于不同的两点
,
满足
?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/32366143230ca122894a4bada7c7b96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadb8846059da93a4169e77c3aee7b9d.png)
(1)求椭圆的方程;
(2)是否存在经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec40ff4479edca2ed18b6cadb8db72f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/d01227758bec9029762f815fd735a3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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