3.1.1、3.1.2 空间向量及其加减运算、空间向量的数乘运算
重点练
一、单选题
A.![]() ![]() ![]() ![]() | B.![]() |
C.![]() | D.![]() ![]() ![]() ![]() |
【知识点】 空间共面向量定理的推论及应用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d927da8b86c0575b47c78d9161e28caa.png)
A.不共面 | B.共面 | C.共线 | D.不共线 |
【知识点】 判定空间向量共面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840410780b8ecf0a780d1130e7bf2760.png)
![](https://img.xkw.com/dksih/QBM/2018/7/20/1992670167990272/2008119259783168/STEM/d0fa290cec0c4f1cb4b8772ae2904bc3.png?resizew=201)
A.x=![]() ![]() ![]() |
B.x=![]() ![]() ![]() |
C.x=![]() ![]() ![]() |
D.x=![]() ![]() ![]() |
【知识点】 空间向量基本定理及其应用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846aca7779195b0e7d83595f095b0868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefd3d874028452026f7abd684ea20fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b21699c47bbba0c2eec627833c0f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3781501d462c73d9927b8dfa8d980b8a.png)
![](https://img.xkw.com/dksih/QBM/2020/11/24/2599762600099840/2612788324769792/STEM/72390a2a-86ec-4649-8f15-c0f9a76d278a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 空间向量的加减运算
二、填空题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d526c5996af17f6d1a744df35981929c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d182af99aab8dc8ccf94ff6e91f029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd98a891fa65f2fc6688001b03185d0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/fd56a8b9-80d5-4469-80bc-4d3365a24c4d.png?resizew=134)
【知识点】 空间向量加减运算的几何表示 空间向量数乘运算的几何表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049131856ba841523793ee3d83099014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eca8aa7145b2327dbccba46da05bb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b52fad476f828f36de6eb8910497329.png)
【知识点】 用空间基底表示向量
三、解答题
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c3ef7cd624112bfd595f55814882f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd432203550aa7488ff123973cb6a046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515ec252dd2de9549c7ecb568e5b22c0.png)
(2)设M是底面ABCD的中心,N是侧面BCC1B1对角线BC1上的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d911e720abfb1b8892747d79ddc8f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ab3995b72f42aaa773c56051c8eb7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a073df1876111e0271457d5d1af2ae3a.png)
![](https://img.xkw.com/dksih/QBM/2018/7/20/1992670141063168/null/STEM/8eac57589c8243ba8cc57fb9b6670997.png?resizew=192)
【知识点】 用空间基底表示向量 空间向量基本定理及其应用