解题方法
1 . 已知椭圆
的焦点在
轴上,中心在坐标原点.以
的一个顶点和两个焦点为顶点的三角形是等边三角形,且其周长为
.
(1)求栯圆
的方程;
(2)设过点
的直线
(不与坐标轴垂直)与椭圆
交于不同的两点
,与直线
交于点
.点
在
轴上,
为坐标平面内的一点,四边形
是菱形.求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec978eb43bc4f9e7df83b0d0195dcda.png)
(1)求栯圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.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/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592830c3456745cee7d6d1cdc4f5631f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
您最近一年使用:0次
2 . 已知椭圆
的离心率为
分别是G的左、右顶点,F是G的右焦点.
(1)求m的值及点
的坐标;
(2)设P是椭圆G上异于顶点的动点,点Q在直线
上,且
,直线
与x轴交于点M.比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c39d8227c3f373e6dae8e46fd410f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a16354f17e5e6c9943cc721d63f830f.png)
(1)求m的值及点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)设P是椭圆G上异于顶点的动点,点Q在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a3b3ab26376be3df144adc6ec6bbea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea2c1df63a599a774043f6c3b881ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30c8db27f13442553eacf2b144a75ec.png)
您最近一年使用:0次
名校
3 . 已知双曲线
的焦点为
,离心率为2,点
是
上一点,若
的面积为
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2cc13ba03a3ee128bcf3ed40813836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.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/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f384e98d574fa2676d61624285f88188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
A.锐角 | B.直角 | C.钝角 | D.不能确定 |
您最近一年使用:0次
名校
4 . 已知抛物线
和
所围成的封闭曲线如图所示,已知点
,若在此封闭曲线上至少存在两对不同的点,满足每一对点关于点
对称,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7d334f7186c612a2bac12ae5e0365e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd19a2c03d1e73566700185cba3cb78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-27更新
|
219次组卷
|
2卷引用:北京市海淀区北京一零一中2023-2024学年高三下学期统考四(开学考)数学试题
名校
5 . 已知抛物线
的焦点为
是准线
上一点,直线
与
的一个交点为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1aa85d21a5cca0a5f749e1f6e77bb78.png)
_________ ,
点的横坐标为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f30df549988bcbe2dbe44644422adc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d945b17623cd01fa90180c4d4fca91f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/f713a20c94ff7a63e97dd13985ae696e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1aa85d21a5cca0a5f749e1f6e77bb78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
解题方法
6 . 已知点F是双曲线
的一个焦点,直线
,则“点F到直线l的距离大于1”是“直线l与双曲线C没有公共点”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4058fc45c49e6710ba7e273cb7888704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3016baf1a9ce777f16ea9ce469b2510.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-02-18更新
|
188次组卷
|
2卷引用:北京市清华附中高22级2023-2024学年高二上学期期末数学试题
名校
解题方法
7 . 已知直线
经过抛物线
的焦点
,且与C的两个交点为P,Q.
(1)求C的方程;
(2)将
向上平移5个单位得到
与C交于两点M,N.若
,求
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97afdeaa1d4433cffe5005446fcbbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求C的方程;
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2aa8640b04fc3cb953eb5b21ec8f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87f31d6b34a3dc76a04fc0a87dbd877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2024-02-10更新
|
346次组卷
|
2卷引用:北京市海淀区2023-2024学年高二上学期期末练习数学试卷
名校
解题方法
8 . 已知双曲线
的左右顶点分别为
,右焦点为F,以
为直径作圆,与双曲线C的右支交于两点
.若线段
的垂直平分线过
,则
的数值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91627084e8edbdd39892c9efe272443e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a881309775c3b6a9f4ed408838666342.png)
A.3 | B.4 | C.8 | D.9 |
您最近一年使用:0次
2024-02-10更新
|
407次组卷
|
2卷引用:北京市海淀区2023-2024学年高二上学期期末练习数学试卷
9 . 已知椭圆
过点
,焦距为
.
(1)求椭圆
的方程,并求其短轴长;
(2)过点
且不与
轴重合的直线
交椭圆
于两点
,
,连接
并延长交椭圆
于点
,直线
与
交于点
,
为
的中点,其中
为原点.设直线
的斜率为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
解题方法
10 . 已知椭圆
的两个顶点分别为
,离心率
为椭圆上的动点,直线
分别交动直线
于点C,D,过点C作
的垂线交x轴于点H.
(1)求椭圆E的方程;
(2)
是否存在最大值?若存在,求出最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e44e2b3635b65b4cbea0040b4151ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ac1b1f9f2100eba5c38555a935e12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(1)求椭圆E的方程;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc75e02ed60cbe20c65c862b697df67.png)
您最近一年使用:0次
2024-01-17更新
|
539次组卷
|
3卷引用:北京市海淀区2023-2024学年高二上学期期末练习数学试卷