名校
1 . 如图,在棱长为1的正方体
中,设
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/6e7c8aa8-c5b4-45c2-8b9c-196059f942f0.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2837ea5f62b75f435dddb3e35d55686b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e90785c948fbef5a0054881395d889.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/6e7c8aa8-c5b4-45c2-8b9c-196059f942f0.png?resizew=158)
A.1 | B.0 | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 定义:设
是空间向量的一个基底,若向量
,则称实数组
为向量
在基底
下的坐标.已知向量
是空间中的一个单位正交基底,向量
是空间中的另一个基底,若向量
在基底
下的坐标为
,则
在基底
下的坐标为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e566988b6fab97d461876e88efd0ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3428ee600e4d0f617ad94be03ebc054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b525d8c768efd801ab58bc4c0da9221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4478fcaef66e8a6a96925ce12d0f8e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e566988b6fab97d461876e88efd0ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5401d7f4a297c8b097e74bdebaaa8570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a66ab2d5b0217e176756fed231dfb2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a66ab2d5b0217e176756fed231dfb2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf04a243d5f5305102ed4c63ab69ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5401d7f4a297c8b097e74bdebaaa8570.png)
您最近一年使用:0次
名校
3 . 过点
引直线
与曲线
相交于
两点,则直线
的斜率范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d3783628fbca1aad41e8477604b269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-19更新
|
476次组卷
|
3卷引用:山西省太原市外国语学校2021-2022学年高二上学期期中数学试题
名校
解题方法
4 . 已知椭圆
经过点
.
(1)求
的方程;
(2)直线
与
相交于
两点,求弦长
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec9006721c4852bf2a64282c6d4b0c4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcefdd5c1866858af881fd6b14005edc.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/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
与双曲线
有相同的焦点
的离心率分别
,P为曲线
与
的一个公共点,则下列各项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8210484dd6815b5bebc7b22f1389cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62166e3ab8b16f12c27082d437fdbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ec2195e246ca84389d10ef68729152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5549fb8f325a43dc46c6f69aab6840cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
名校
6 . 我国发射的“神舟十二号”载人飞船的运行轨道是以地球的中心
为一个焦点的椭圆,地球是一个半径为
的球体,
为地球表面任意一点,飞船运行轨道近地点A与点
的最远距离为
千米,远地点
与点
的最远距离为
千米,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.飞船运行轨道的长轴长为![]() |
B.飞船运行轨道的焦距为![]() |
C.飞船运行轨道的短轴长为![]() |
D.飞船运行轨道的离心率为![]() |
您最近一年使用:0次
2022-12-19更新
|
332次组卷
|
2卷引用:山西省太原市外国语学校2021-2022学年高二上学期期中数学试题
名校
解题方法
7 . 已知抛物线
的焦点为
,点
在
上,其中
.
(1)求
的值;
(2)直线
与
相交于
两点,直线
是圆
的两条切线,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccb9a7686815cadfb5dca40e7ccab5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add14f41dee0283d3478bf06d0dba1b1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6d3d7c7cc276df56a351aa736cf6e5.png)
(2)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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aabf1608dd9ef8e8f00ffd2ebe4a82b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
8 . 已知抛物线
与直线
相切,
为
上任意一点,
到
的准线的距离为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90c785b6b379113e8351e2be163ebbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee0af1ee58b2770d38f1476e885efa5.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 若直线
与直线
垂直.则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90c7ec4eb58bdc893fbbbfb0b4387af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eed461026f69fe9ab2c5dc12af8ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
10 . 已知
为坐标原点,
分别为双曲线
的左、右焦点,以
为直径的圆与
的渐近线在第一象限的交点为
,则点
的横坐标为___________ ;点
,若
,则
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f236182642bce92ffb3668b325ea5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c35ef466cd62d4b222bbef1cb8daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次