已知向量
、
、
可以构成空间向量的一组基底,则这三个向量中哪一个向量可以与向量
和向量
构成空间向量的另一组基底?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad7ce915e732d42fdab42890b716c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8a34c9cd253ebee165ee0c968579ae.png)
21-22高二·全国·课后作业 查看更多[5]
(已下线)第一章 空间向量与立体几何 1.1 空间向量及其运算 1.1.3 空间向量的坐标与空间直角坐标系(已下线)第05讲 空间向量基本定理-2022年暑假高一升高二数学衔接知识自学讲义(人教A版2019)人教B版(2019)选择性必修第一册课本习题习题1-1(已下线)第02讲 空间向量基本定理(5大考点8种解题方法)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)(已下线)专题02空间向量基本定理(2个知识点3种题型)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)
更新时间:2022-03-01 10:04:12
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【知识点】 空间向量基底概念及辨析
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【推荐1】已知
是空间的一组基, 且
,
,
,
.
(1)
能否构成空间的一组基底?若能,试用这一组基向量表示
;若不能,请说明理由.
(2)判断
,
,
,
四点是否共面,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14687870a7969fc65366ff7d614d6513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffee08d801a1da47c735d7b862a17c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec52d467c8340485e8f564722b93aaf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd7d2f7f59c7be927d4364a89eed5d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a08842b8d467a492d026304ee56a90.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7169d208931c73452ad5b216043df720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec64476aaca08de0808afda3618109c.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】已知
是空间的一个基底,且
=
,
=
,
=
,试判断{
}能否作为空间的一个基底?若能,试以此基底表示向量
=
;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1225c3a3fe9d93a2cddd71faf2b44158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed9e2c8c99360e21d4c8cf578cba1e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7d2c9c617deec0cc6ab06af5d01be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba58d0939649c714b003758bd1cb7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db443a3818b1818aaa5184e7d92992d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e2e6463a66648405391343fa0ff615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12043fbdfadbf715bbc7969cdf71a907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d82b332b50db00d039b3b9c8bdea345.png)
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【推荐3】空间中,两两互相垂直且有公共原点的三条数轴构成直角坐标系,如果坐标系中有两条坐标轴不垂直,那么这样的坐标系称为“斜坐标系”.现有一种空间斜坐标系,它任意两条数轴的夹角均为
,我们将这种坐标系称为“斜
坐标系”.我们类比空间直角坐标系,定义“空间斜
坐标系”下向量的斜
坐标:
分别为“斜
坐标系”下三条数轴(
轴、
轴、
轴)正方向的单位向量,若向量
,则
与有序实数组
相对应,称向量
的斜
坐标为
,记作
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/1147f5ac-5054-47a5-9859-0532261403c7.png?resizew=154)
(1)若
,
,求
的斜
坐标;
(2)在平行六面体
中,
,
,如图,以
为基底建立“空间斜60°坐标系”.若
,且
,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4664eed9e1abab0ed6397c58d70e731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138c39673b579f1346c38398811105a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b525d8c768efd801ab58bc4c0da9221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60fd9ea272088c32da829aea1de070b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad77af674bcbc49460fb989fa973372.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/1147f5ac-5054-47a5-9859-0532261403c7.png?resizew=154)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ade1012bfb509cb44ee60d6111e439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1f037129b07c0be3c9be28929655bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
(2)在平行六面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a698be6c34b89c748764041281fd4da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0b24d3b14c326b2baa2d2c5e8db871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be560befd3ac8e670f8b6edd15edf31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b462f38860b00ac3b9bb1708ddd7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6296eba0401c2012d7d8c0c5dddc9c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59cbb23e8edee78010195fe66d3e55b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5813dd9f2bd01a38d749247eccca5449.png)
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