How exactly does (x1, y1)(x2, y2) expand out to (c1x2 - y1y2, x1y2 + x2ya)?
How exactly do they 'solve this system', i.e. derive the equations for x' and y', I was just having a mental blank on this earlier.
Thanks for the help.
I've recently finished Year 12 and am going to take a gap year off to work mostly before uni in 2010. I have never had a job before so what is the best way to go about getting one?
Is it better (or expected) for you to 'creatively lie' about your skills? Should I make up past work experience...