+50 So I was working on this problem untill I hot the wall on "Next, we consider....". Problems is that don't even fully understand what this task wants me to do. My first impression was simply to replace X's with X+Alpha and y with Y + f(Alpha), but it gives really messy answer with many different terms and even combining them I hardly come up with something remotely close to the "hinted" answer. Possably I'm doing it completely wrong because I'm missunderstanding something. If someone could Help understanding and perhaps solving this, I'd be very grateful.
