#### Archived

This topic is now archived and is closed to further replies.

# Simple rotation question

This topic is 5266 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

## Recommended Posts

I know that if I have three 3D vectors (u1,u2,u3), I can create a 3x3 matrix with columns these vectors and if I multiply the inverse of this matrix with a point, actually I transform this point to a system with these three vectors as axes(correct me if I''m wrong). I''d like to know if the same happens with 2D vectors and points. Assume that I have 2 2D vectors(v1,v2) and that I create a 2x2 matrix with columns these 2 vectors. If I multiply a point with the inverse of this matrix, will it happen the same with the above example? And if not, how can I represent this point in a coordinate system with axes the 2 vectors? It''s like I want to change the coordinate system and have as x and y axes the 2 vectors (v1,v2).I hope you understood my question. Thanks!!!

##### Share on other sites
Yes, it works with 2D. It works with any D.

1. 1
2. 2
3. 3
Rutin
18
4. 4
5. 5
JoeJ
12

• 14
• 9
• 22
• 9
• 31
• ### Forum Statistics

• Total Topics
632618
• Total Posts
3007482
• ### Who's Online (See full list)

There are no registered users currently online

×