Question

I am a dummy but i recently became interested in Matrix analysis. I also realized I need to start with basics in linear algebra and geometry. Is there someone here who is patient enough to work me through, or help with resources? Thanks in advance

Answer 1

one method of a 3by3 matrix is the diagnol method(not the mathmatical term but its what i call it lol)
you take the first two teerms and copy them over
EX.
l3 4 5l 3 4
|6 5 7l 6 5
l9 3 2l 9 3

Answer 2

thanks. and then what happens?