解题方法
1 . 已知椭圆
的离心率为
,且
过点
.
(1)求
的方程;
(2)若AB分别为
的上、下顶点.O为坐标原点,直线l过
的右焦点F与
交于C,D两点,与y轴交于P点.
①若E为CD的中点求点E的轨迹方程;
②若AD与直线BC交于点Q,求证
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163b5beef24f681605adecc6b0ba76e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac05a8ee144fa07309a052ce591ebe9a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若AB分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
①若E为CD的中点求点E的轨迹方程;
②若AD与直线BC交于点Q,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5215b714cde3ed7790b3ed4f6711c3.png)
您最近一年使用:0次
解题方法
2 . 已知正方体
的棱长为2,点M,N分别为棱
的中点,点
为四边形
(含边界)内一动点,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53e1d6a86a36dd76b41004af795d901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7967ac1132d836e6a2ca6af5790521.png)
A.![]() ![]() |
B.点![]() ![]() |
C.存在点![]() ![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
3 . 如果动点
满足
,则点
的轨迹是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae04b86ed14d09dd42b238bed0529ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
A.椭圆 | B.双曲线 | C.抛物线 | D.线段 |
您最近一年使用:0次
4 . 已知点
,动点
满足
,则
取得最小值时,点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1971d16eaaec0a80ff99f3054820de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df5d30e4268a4b86a4e098e8cb57da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da95fbf462f15884c1194057edd2f5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 在棱长为 1 的正方体
中,已知
分别为线段
的中点,点
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85789b7d63712c81dcc0fb60014bbb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b829ac65651fac7a19a0b837939c3ff.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
7日内更新
|
797次组卷
|
2卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期第二阶段性学业质量联合调研抽测(5月)数学试题
名校
6 . 伯努利双纽线最早于1694年被瑞士数学家雅各布·伯努利用来描述他所发现的曲线.在平面直角坐标系
中,把到定点
,
距离之积等于
的点的轨迹称为双纽线,已知点
是
的双纽线
上一点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb162568cb923c31c7209c8a22e4674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca4d2dd6a806193dfd4d66991a48a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be45dd63a0db0b7ab458f30ee6a67881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.双纽线![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 棱长为2的正方体
中,M,N分别为
,
的中点,点
在正方体
的表面上运动,若
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32df475a4f2164dcecfe1bd57fa4d51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
A.2 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
7日内更新
|
160次组卷
|
2卷引用:海南省2022-2023学年高二下学期学业水平期中考试数学试题
8 . 已知定点
,动点N在直线
上,过点N作l的垂线,该垂线与NF的垂直平分线交于点T,记点T的轨迹为曲线C.
(1)求曲线C的方程;
(2)已知点P、A、B是曲线C上的点,且
.
(i)若点P的坐标为
,则动直线AB是否过定点?如果过定点,请求出定点坐标,反之,请说明理由;
(ii)若
,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42502a5730e1930d77d7100d1e34707.png)
(1)求曲线C的方程;
(2)已知点P、A、B是曲线C上的点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
(i)若点P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7334402b0f5f606a82d027208e3e2c.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81529452eb2cb8578fd164db9e957ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
名校
9 . 如图是一个所有棱长均为4的正八面体,若点
在正方形
内运动(包含边界),点
在线段
上运动(不包括端点),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
A.异面直线![]() ![]() |
B.当![]() ![]() |
C.该八面体被平面![]() |
D.凡棱长不超过![]() |
您最近一年使用:0次
名校
10 . 已知正方体
是边长为1的正方体,点
为正方体棱上的一动点,则使得
的点
有__________ 个.(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa501be0fafcaaa3fa31731e929e301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次