1 . 若
,
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599e8d2f77dc49d23111c3c462b0f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6978b06ddc65a12c682121db7292b110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f47f236ed6690d122fc46a147dacd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158a3d703a6c5dd53310294aba0bbb40.png)
A.![]() | B.5 | C.7 | D.36 |
您最近一年使用:0次
2020-09-05更新
|
629次组卷
|
9卷引用:四川省德阳市绵竹市南轩中学2019-2020学年高二第一次月考数学(理)试题
四川省德阳市绵竹市南轩中学2019-2020学年高二第一次月考数学(理)试题(已下线)1.3+空间向量及其运算的坐标表示(基础练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版选择性必修第一册)(已下线)3.3 空间向量及其运算的坐标表示(基础练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)(已下线)1.3 空间向量及其坐标的运算(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教版A版)(已下线)1.3 空间向量及其运算的坐标表示-2020-2021学年高二数学课时同步练(人教A版选择性必修第一册)(已下线)6.2.2 空间向量的坐标表示-【题型分类归纳】2022-2023学年高二数学同步讲与练(苏教版2019选择性必修第二册)第一章 空间向量与立体几何 讲核心02河南省驻马店市上蔡县衡水实验中学2022-2023学年高二上学期期中文科数学试题(已下线)专题03空间向量及其运算的坐标表示(5个知识点4种题型1个易错点)(2)
2 . 如图,在平行六面体
中,以顶点
为端点的三条棱长都是1,且它们彼此的夹角都是
,
为
与
的交点.若
,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/c1c40cfd-6f62-46a9-9591-56d61ee66414.png?resizew=204)
(1)用
表示
;
(2)求对角线
的长;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac265febbf99dccf51aa0a2253e61f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44a918c7cfd942d3a53e584c26685a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f4aa55c2b5bd71b449222baf6effad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/c1c40cfd-6f62-46a9-9591-56d61ee66414.png?resizew=204)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4648d56ec5ba86c288bc22737250ba0.png)
(2)求对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9ca3a1d426476de48304de932944e1.png)
您最近一年使用:0次
2020-08-12更新
|
1067次组卷
|
13卷引用:四川省德阳市绵竹市南轩中学2019-2020学年高二第一次月考数学(理)试题
四川省德阳市绵竹市南轩中学2019-2020学年高二第一次月考数学(理)试题(已下线)[新教材精创] 1.1 空间向量及其运算(基础练习) - 人教A版高中数学选择性必修第一册江苏省淮安市涟水县第一中学2020-2021学年高二上学期第二次阶段检测数学试题(已下线)1.2 空间向量基本定理-2020-2021学年高二数学课时同步练(人教A版选择性必修第一册)(已下线)专题1.1 空间向量及其运算(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)(已下线)1.2 空间向量基本定理(精讲)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)苏教版(2019) 选修第二册 限时训练 第2练 空间向量的数量积(已下线)1.1空间向量及其运算A卷(已下线)1.1 空间向量及运算(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)江苏省无锡市市北高级中学2023-2024学年高二上学期期初检测数学试题四川省仁寿第一中学校南校区2023-2024学年高二上学期数学国庆作业(月考模拟试卷)(一)(已下线)高二上学期第一次月考十八大题型归纳(拔尖篇)(1)(已下线)高二上学期期中复习【第一章 空间向量与立体几何】十大题型归纳(拔尖篇)-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)
3 . 已知点
,直线
过抛物线
的焦点交抛物线
于
、
两点,且
恰与抛物线
相切,那么直线
的斜率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f65a50e30d1c212bc0134e5ed760b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
4 . 已知动点
到点
的距离和到直线
的距离之比为
.
(1)求动点
的轨迹方程
;
(2)已知点
,过点
的直线和曲线
交于
、
两点,直线
、
、
分别交直线
于
、
、
.
(i)证明:
恰为线段
的中点;
(ii)是否存在定点
,使得以
为直径的圆过点
?若存在,求出定点
的坐标,否则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(ii)是否存在定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
您最近一年使用:0次
2020-07-30更新
|
441次组卷
|
2卷引用:四川省德阳市2020届高三高考数学(文科)三诊试题
解题方法
5 . 如图所示,四棱柱
的侧棱与底面垂直,底面
是菱形,四棱锥
的顶点
在平面
上的投影恰为四边形
对角线的交点
,四棱锥
和四棱柱
的高相等.
![](https://img.xkw.com/dksih/QBM/2020/7/30/2516895519547392/2517208957730816/STEM/a4be1ec7662c4b08941b126c4548be9b.png?resizew=182)
(1)证明:
平面
;
(2)若
,
,求平面
与平面
所成的二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2020/7/30/2516895519547392/2517208957730816/STEM/a4be1ec7662c4b08941b126c4548be9b.png?resizew=182)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50fc25927a6862b6643bcfebefc44873.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4afa61e0bcb124aec52ad0cc84fd94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da630440d6d416f19ee22c8431c882.png)
您最近一年使用:0次
2020-07-30更新
|
340次组卷
|
3卷引用:四川省德阳市2020届高三高考数学(理科)三诊试题
6 . 已知点
,直线
过抛物线
的焦点交抛物线
于
、
两点,且
恰与抛物线
相切,那么线段
的中点坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f65a50e30d1c212bc0134e5ed760b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
解题方法
7 . 过双曲线
的左焦点
作圆
的切线,切点为E,延长FE交抛物线
于点P,O为坐标原点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66dca86d49c8fd55b493c27be6986df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60389bb9c364e9a7cfbe140389acebd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4be819fc47b2aa19ab2022b3dfeb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae6433125ae380b1ba0c41a146ab004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba2e4666eb8f2e77bd14fae50364ba6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-01-04更新
|
659次组卷
|
3卷引用:四川省德阳市德阳市第五中学2022-2023学年高二上学期期中数学(文)试题
四川省德阳市德阳市第五中学2022-2023学年高二上学期期中数学(文)试题2015届福建省泉州五中高三模拟考试文科数学试卷(已下线)专题21 《圆锥曲线与方程》中的切线问题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
解题方法
8 . 在
中,
、
的坐标分别为
,
,且满足
,
为坐标原点,若点
的坐标为
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/b77836ff905047c4501089e60021bcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a4413d4605e167b359b4fb6347e193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef2f05082fa82c7d1a0569cd89b8e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5678eb26b5cd0198050fb8e9c1249d.png)
您最近一年使用:0次
2020-04-14更新
|
366次组卷
|
2卷引用:2020届四川省德阳市高三“二诊”考试数学文科试题
名校
9 . 如图,四棱锥
的底面
中,
为等边三角形,
是等腰三角形,且顶角
,
,平面
平面
,
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2c984f19-e350-41d0-a287-3bfc7338ab3c.png?resizew=168)
(1)求证:
平面
;
(2)若
,求二面角
的余弦值大小.
![](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/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/2c984f19-e350-41d0-a287-3bfc7338ab3c.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371853a703a8dafa6f8e942f46cb8706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ec3d90e5f12cd8946d4dc638c1a357.png)
您最近一年使用:0次
2020-04-14更新
|
439次组卷
|
4卷引用:2020届四川省德阳市高三“二诊”考试数学理科试卷
名校
解题方法
10 . 已知
为抛物线
的准线,抛物线上的点
到
的距离为
,点
的坐标为
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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A.![]() | B.4 | C.2 | D.![]() |
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2020-04-14更新
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5卷引用:2020届四川省德阳市高三“二诊”考试数学文科试题