解题方法
1 . 如图,在直角梯形
与等腰直角三角形
所在的平面互相垂直,且
,
.
(1)求证:
;
(2)线段
上是否存在点E,使得
平面
?若存在,求出
的值,若不存在,说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01c14c9152a923d9299b79388fe45f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878418731149a021bebc18a235df02c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/18f1c770-93e7-4dee-b85f-210cf5b9d391.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c583493109d50c9e4634c05e9042a9f.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb178784aa857d4d4683e650273f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7035d954e76a15924de818e7e10e924a.png)
您最近一年使用:0次
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解题方法
2 . 已知椭圆
的离心率为
,
分别是它的左、右焦点,且存在直线l,使得
关于l的对称点恰好是某一个半径为2的圆的直径的两个端点.
(1)求椭圆E的方程;
(2)设直线
与抛物线
相交于A、B两点,射线
、
与椭圆E分别相交于M、N.试探究:是否存在数集D,当且仅当
时,总存在实数m,使得点
在以线段
为直径的圆内?若存在,求出数集D并证明你的结论;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
(1)求椭圆E的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463742c5f9c442d712f183d7430f4134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80ecb6b5d5eca464b3f099513c08fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283e4d7375d770823775e4036c9f6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8751b9396c91c12f8b60bcf6a87f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2022-04-17更新
|
299次组卷
|
2卷引用:重庆市第一中学校2021-2022学年高二下学期第一次月考数学试题
3 . 如图,已知椭圆
(
)的离心率为
,以该椭圆上的点和椭圆的左、右焦点
,
为顶点的三角形的周长为
,一双曲线的顶点是该椭圆的焦点,且它的实轴长等于虚轴长,设
为该双曲线上异于顶点的任一点,直线
和
与椭圆的交点分别为
、
和
、
,其中
、
在
轴的同一侧.
![](https://img.xkw.com/dksih/QBM/2020/10/28/2580976495689728/2581335927693312/STEM/a0b847faebbc408fb771bfa3001e7b83.png?resizew=222)
(1)求椭圆和双曲线的标准方程;
(2)设直线
、
的斜率分别为
、
,证明
;
(3)是否存在题设中的点
,使得
.若存在,求出点
的坐标;若不存在,请说明理由.
![](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/8d5989c84e320b504511f23eeb6e7357.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/8f676664eba899f4064cf6e545c34f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2020/10/28/2580976495689728/2581335927693312/STEM/a0b847faebbc408fb771bfa3001e7b83.png?resizew=222)
(1)求椭圆和双曲线的标准方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.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/2a30c084de07c0c84de9348cfa688088.png)
(3)是否存在题设中的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce9c02873972d618e3dc0cd65dd93a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2020-10-29更新
|
399次组卷
|
2卷引用:重庆市西南大学附属中学2020-2021学年高二上学期第一次月考数学试题