🙏Please help find a mistake - Projection Matrix

Darya

Junior Member
Joined
Jan 17, 2020
Messages
147
I have translated my solution to English, if you have any questions regarding the notations - feel free to ask.
I have checked that spaces X and Y are complementary, B is a matrix that consists of basis of X and Y.
The formula for projection matrix I have deduced I saw first during my classes. I cannot understand why my solution is wrong. (P is not even symmetric)16357036687145761594373929684638.jpg
 

Darya

Junior Member
Joined
Jan 17, 2020
Messages
147
Why do you think that P must be symmetrical ?
Indeed it doesn't have to be if it's not orthogonal projection🤦‍♀️ P=P^2 so it is indeed a projector
I guess my problem is solved! At least this way I'll remember it better. Thank you so much!
 
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