1 .
个有次序的实数
所组成的有序数组
称为一个
维向量,其中
称为该向量的第
个分量.特别地,对一个
维向量
,若
,
,称
为
维信号向量.设
,
,则
和
的内积定义为
,且
.
(1)直接写出4个两两垂直的4维信号向量;
(2)证明:不存在14个两两垂直的14维信号向量;
(3)已知
个两两垂直的2024维信号向量
满足它们的前
个分量都是相同的,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27bb33ccdad573e2b2b0e7facbcca07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d038f2967ee70acc7777c32c8b43c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9925b25d5708cbd87f69cca1b5c66c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143f87bed8eee1f43d3e67be747b7d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcadd9ce3631b6e230fe7b21a0719c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e0d46fb5c7c978e4fe9c23f33ba151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143f87bed8eee1f43d3e67be747b7d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777dac26504cae699de348ec1df9dc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8346ea7024dd0c905cc4c80cb16dc6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c7c807358869b70becd16ca80e1714.png)
(1)直接写出4个两两垂直的4维信号向量;
(2)证明:不存在14个两两垂直的14维信号向量;
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9cae65660b220cc622b87ed9eea092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2182d0dad848ccc76944d976befbf2.png)
您最近一年使用:0次
2024-02-23更新
|
690次组卷
|
6卷引用:湖北省武汉市华中师大第一附中2023-2024学年高二下学期数学独立作业(一)
湖北省武汉市华中师大第一附中2023-2024学年高二下学期数学独立作业(一)(已下线)模块一 专题3 平面向量的应用(B)广东韶关实验中学2023-2024学年高一下学期3月月考数学试题(已下线)模块一专题3 《平面向量的应用》B提升卷(苏教版)(已下线)模块三专题4大题分类练(专题3 平面向量数量积)【高一下人教B版】(已下线)高一数学下学期期中模拟卷(新题型)-同步题型分类归纳讲与练(人教A版2019必修第二册)
2 . 已知平面内一点
在圆
上,分别过定点
的两条直线
相交于点
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721ad569a46f9153f1ba88fa1c0987dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d29bdc9a21471add5908f2dd609ef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.动点![]() ![]() |
B.![]() ![]() |
C.点![]() ![]() ![]() |
D.动点![]() ![]() |
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