名校
1 . 已知正方体
的棱长为1,
,
,
分别在
,
,
上,并满足
(
),若
是
的重心,且
,则实数
值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94ce22f30a8de2af135de3c89403aff.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
2 . 长方体
中,
,点
是线段
上异于
的动点,记
.当
为钝角时,实数
的取值范围是______ ;当点
到直线
的距离为
时,
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbff493a22d755c6b473513e2e39ecc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a32354ec349b41bad072b6dc943f99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f0273182b11d6ac595eb602b73cb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
3 . 已知空间向量
与
夹角为钝角,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d49bd5a8a2c0082a4a0831359ac1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17182234ffbe61e12ec19b09bf5b2778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
名校
4 . 已知空间三点
,则
在
上的投影向量坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a87b4fe2729a934405c675865998913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
您最近一年使用:0次
2024-04-10更新
|
277次组卷
|
3卷引用:专题01 空间向量表示及运算--高二期末考点大串讲(苏教版2019选择性必修第二册)
(已下线)专题01 空间向量表示及运算--高二期末考点大串讲(苏教版2019选择性必修第二册)湖南省张家界市民族中学2023-2024学年高二下学期入学考试数学试题福建省莆田第二中学、仙游第一中学2023-2024学年高二下学期期中联考数学试题
名校
5 . 在空间直角坐标系中,点P坐标可记为
:定义柱面坐标系,在柱面坐标系中,点P坐标可记为
.如图所示,空间直角坐标
与柱面坐标
之间的变换公式为:
,
,
.则在柱面坐标系中,点
与点
两点距离的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d594e1827f2d6d03295009b1ed75b3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9913222c15a1a347b1a02f76ed54a782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d594e1827f2d6d03295009b1ed75b3d3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2640f8df813aa4916984fb30e90a9a4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abb31a34f7c99d6891453dd1d6e6ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c34ace65d315585e942d7194fc08582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d57e7a83bdad98eb39cadf3362abc0a.png)
您最近一年使用:0次
2024-01-20更新
|
141次组卷
|
2卷引用:江苏省南京河西外国语学校2023-2024学年高二下学期3月调研数学试题
解题方法
6 . 如图,在四棱锥
中,已知
平面
,且四边形
为直角梯形,
,
,
.点
是线段
上的动点,当直线
与
所成的角最小时,则线段
的长为____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666c7e13a7999bd5970c1e478a665935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54737f3ba6f26bee7f6e2e9dddec0b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/2f945b03-482c-4064-b098-20c5f87aac29.png?resizew=166)
您最近一年使用:0次
2023-03-28更新
|
1105次组卷
|
6卷引用:江苏省连云港市灌南高级中学2022-2023学年高二下学期第一次月考数学试题
江苏省连云港市灌南高级中学2022-2023学年高二下学期第一次月考数学试题(已下线)第11讲 用空间向量研究距离、夹角问题11种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)第06讲 1.4.2用空间向量研究距离、夹角问题(1)(已下线)考点巩固卷18 空间向量与立体几何(九大考点)(已下线)考点12 空间角 2024届高考数学考点总动员【练】(已下线)专题03 空间向量的应用压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)
名校
解题方法
7 . 在四棱锥
中,已知
底面
,
,
,
,
,
是平面
内的动点,且满足
.则当四棱锥
的体积最大时,三棱锥
外接球的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714c08709c8c7ffe28ca8894f2eba278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d923a338dd2d2e29336b42574d38448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe0f58c2734932d8c83eee296040cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7826e3c6a53025324df827b39c9f7db7.png)
您最近一年使用:0次
2022-02-28更新
|
1049次组卷
|
3卷引用:江苏省徐州市第七中学2022届高三下学期2月学情调研数学试题