已知
,
,
,则
在
方向上的投影为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f089a9e08ceb59cb58d7a5be2f62e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ba0f8f5ee50a04b9d47073520ad155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e369966152f1a1fc0b087ad6b0054f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
16-17高一下·上海徐汇·期末 查看更多[2]
上海市南洋模范中学2016-2017学年高一下学期期末数学试题(已下线)上海期末真题精选50题(小题基础版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)
更新时间:2020-01-19 00:16:26
|
【知识点】 平面向量数量积的几何意义解读
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
【推荐1】给出以下命题:
(1)已知
均为非零向量,若
,则存在唯一的实数
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6836870d047ff2faeea5d05721f4058.png)
(2)已知非零向量
,且
与
的夹角为锐角,则实数
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7373ebb59d3c81a76333fc689786c9bc.png)
(3)若
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542d99ab19e2ecc0c7ef75161f133.png)
(4)若向量
,则向量
在向量
上的投影向量为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b45d24553c5ebdcbce51e4623aa0d46.png)
其中正确命题的序号是_________ .
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6836870d047ff2faeea5d05721f4058.png)
(2)已知非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5082678b28ab3b42ee3642f7b7dc752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afae9db82464afb37d387f6cbedc8139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7373ebb59d3c81a76333fc689786c9bc.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693ca4bb515ca182ba6e465e6d584168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9acc9ba57f93573aaf8dc7d061a11a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542d99ab19e2ecc0c7ef75161f133.png)
(4)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddca6c0a06abc068b9cb4f66018b1d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b45d24553c5ebdcbce51e4623aa0d46.png)
其中正确命题的序号是
您最近一年使用:0次