I just added a small `Remark on quadratic forms‘ to the course webpage, which I hope you’ll read. It was prompted by a question from one of you concerning the reason for looking at the quadratic form associated to a symmetric bilinear form. I gave some kind of an answer, and then realized that the direction of application had actually been reversed. So take a look! I’m aware of your general reluctance to read such things 
, so I’ll mention that the note might even help you with the coursework this week.
MK
