wtf is this 6 hours a day business...I studied...0 hours a day and in the end did 2 past papers and got e4 easy...Most of 4U isn't even problem solving...It's just following a method. That's true for all of graphs, all of complex (except last part in q2), all of polynomials, all of integration (maybe some reduction etc), all of mechanics....you get the picture...As long as you know how to do it, you'll be fine