i wouldnt say it is difficult. it is one of the easiest areas in hsc maths ( my opinion) although many of my frienz hate it and consider it to be hard .. just wait and see when you do it
oh david how great it is ou bless us with your presence. shouldnt you be patronising us mere 2 uniters or trying to convince us to pick up more maths or something?
anyway calculus is tedious. series and perm/com and prob and basicly everything else bar the even more tedious full working and reasoning for geometry, are more fun