1 . 已知向量
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf012808fd918ef59343d6f52401a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c45a72344b6a6e048bdb163ccb6f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
A.![]() | B.0 | C.2 | D.10 |
您最近一年使用:0次
2 . 已知抛物线
的焦点为
是
上的点,且
.
(1)求
的方程;
(2)已知直线
交
于
两点,且
的中点为
,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315ade6f1c078456b174d1fa56a65ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23359c60aaf591f98b0ed48522f9c48a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4212afb2cfabd73893af322539b18d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb053c0c73bccec3ba5cb1d8c83fb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2024-01-23更新
|
533次组卷
|
3卷引用:辽宁省县级重点高中协作体2023-2024学年高二上学期期末数学试题
3 . 设命题
,则命题
的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb52e7ac6ad696481567f53b50923de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 在平面直角坐标系中,
,
,
为平面内一点,在三角形
中,
,记
的轨迹为轨迹
.
(1)求轨迹
的方程.
(2)若直线
的斜率大于0,且截轨迹
的弦长为
,且
为钝角,若
交
轴于点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f91a4f8e2db99391119be85a004389b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035ba83f551b2cb70f0b76c3a73f8198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfa7c018b22be911d2f54ef71c56398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f012929e9528e85dec12c3c9f365fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bb1c5af4c7a9376882867e07690b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f2b260e20f91cf71053ee7b34d8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f6ed43b37c8799d441779c3ee84305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bb1c5af4c7a9376882867e07690b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d433ec64dc8419b11b1cf57679be4806.png)
您最近一年使用:0次
名校
5 . 如图所示,四棱锥
的底面
是边长为1的菱形,
,
是
的中点,
,
,平面
平面
,点
到平面
的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/b370a397-5f61-4a5a-989f-5eeb11c231ee.png?resizew=165)
(1)求证:
平面
.
(2)求平面
和平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc532cfe64300cb3da9e04a307c957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db27b7f29d7d01b2692f217bc3079fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a26a7784c7419d8359fb119c8ecc03d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/b370a397-5f61-4a5a-989f-5eeb11c231ee.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb31601464364be2baf4aa87404bcd.png)
您最近一年使用:0次
2024-01-23更新
|
957次组卷
|
3卷引用:辽宁省大连市部分学校2023-2024学年高二上学期期末考试数学试卷
6 . 椭圆
的左右焦点分别为
,若P,Q为椭圆C上两点,命题p:椭圆C的离心率
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e756feec2851b90497421790a7206e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
A.命题a:![]() ![]() ![]() ![]() |
B.命题b:![]() ![]() |
C.命题c:![]() ![]() ![]() |
D.命题d:![]() ![]() ![]() |
您最近一年使用:0次
7 . 双曲线
和
的方程均满足
,其中
的焦点在
轴上,顺次连接
的两个焦点和
的两个顶点恰好可以构成一个面积为4的正方形.
(1)求双曲线
和
的方程.
(2)若
为
左支上一动点且不在
轴上,过
作
的切线交
于
两点,过
作
的平行线交
于
,顺次连接
四点构成四边形
,求证:四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d599c8a6dbf883077ac00dc5d00257c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2816c1cb72ed019c7a062bd59aab4af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2816c1cb72ed019c7a062bd59aab4af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5663f0992b845a51c65f0da3a0140c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d96e428931b19cf639d3e0f26ebe23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d96e428931b19cf639d3e0f26ebe23.png)
您最近一年使用:0次
解题方法
8 . 边长为2的正三角形
所在平面为平面
,平面
外有一点
,且三棱锥
的体积为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34328a2aa0c6f001c264a97b7a08a680.png)
A.8 | B.9 | C.10 | D.18 |
您最近一年使用:0次
解题方法
9 . 在平面直角坐标系中,已知双曲线的左右焦点分别为
,
为双曲线
上一点,
,则下列说法正确的是( )
A.![]() ![]() | B.三角形![]() |
C.![]() ![]() | D.三角形![]() ![]() |
您最近一年使用:0次
名校
10 .
,
,
,
为坐标原点,则点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e40a197e3992799709d8b60cb9ef67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63771cb4fbb7834cac0770b69e7a6faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd25db4962adc079dfb07fa6947417c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次