Forgot password?
 Register account
View 1861|Reply 5

[几何] 一道向量小题

[Copy link]

209

Threads

950

Posts

6222

Credits

Credits
6222

Show all posts

敬畏数学 Posted 2016-4-18 09:53 |Read mode
p,a,b均为向量,且满足a*b=-1/2,p*a=p*b=1/2,则|a|——————;

7

Threads

578

Posts

3956

Credits

Credits
3956

Show all posts

游客 Posted 2016-4-18 11:04
未命名.PNG

209

Threads

950

Posts

6222

Credits

Credits
6222

Show all posts

 Author| 敬畏数学 Posted 2016-4-18 11:59
回复 2# 游客
谢谢!题目是求向量a的模长?

209

Threads

950

Posts

6222

Credits

Credits
6222

Show all posts

 Author| 敬畏数学 Posted 2016-4-18 16:32
Last edited by hbghlyj 2025-5-18 11:59回复 3# 敬畏数学
此题有问题吗?

1

Threads

10

Posts

1025

Credits

Credits
1025

Show all posts

nkzxwdy Posted 2016-4-18 23:32
按2楼说法,向量a的模可以任意,这样理解对么?

209

Threads

950

Posts

6222

Credits

Credits
6222

Show all posts

 Author| 敬畏数学 Posted 2016-4-19 10:30
回复 5# nkzxwdy
一道有问题的题。

Mobile version|Discuz Math Forum

2025-5-31 11:17 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit