1 . 若
,
,
均为任意向量,
,则下列等式不一定成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524594bf0942ed86f56fc1eee120a81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-10-18更新
|
1208次组卷
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5卷引用:人教B版(2019) 必修第三册 学习帮手 模块检测
21-22高二上·全国·课后作业
2 . 下列各命题中,不正确的命题的个数为( )
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f93226af24c87c286d48b365407cede.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4abb2692606c6e6a1437c2a0732afb3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9479dc5abcd6d787c6a6713bbddfec3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3598d80092e3c3c5da31c5b31328f1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f93226af24c87c286d48b365407cede.png)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次