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You could use hyperbolic functions. The standard integrals for them are easy to remember.... :P

65-70% in Ext 2 would probably constitute a low E4.

Is that like the Lagrange multipliers?

NB: Repeated factors for partial fractions are not in the HSC course. Although they can ask something similar. eg. giving you the form of the partial fractions and asking you to find the unknown coeffs.

I prefer the substitution x=1/u for these types of problems... But that's just me.

I think that's quite a standard question. I've seen it around in trials etc. Most likely the CSSA ones...

They do some HSC topics in their prelim course, by looking at a lot of their past exams... Not sure if they substitute the topics though (ie. swap some prelim and HSC courses around).

Yes they can, aslong as they've fully finished the prelim course.

You're not breaking the law by starting the HSC course bit earlier. Aslong as your school has finished the prelim course then there's no problem.

In 3 unit you do more topics. In my opinion it's not THAT much harder. It literally is an extension of the work you do in 2U. And yes you need to be good with your algebra.

That means that you haven't done Conics, Mechanics, Volumes and Harder 3U...

That's actually not quite correct. The probability of getting all 10 questions correct is something like (1/4)^10 ...

If you had limits then you could also use complex analysis methods (not in the scope of the current HSC course).

As Trebla said they don't ask harder projectile motion much.

A/(x-2) + B/(x+2) + C/(x+2)^2 + D/(x+2)^3

This guy speaks the truth.

Coroneos 4U supplement has the best questions for mechanics. They take questions from there for the HSC exam. Apparently Patel is good for mechanics too...

Yeah I have them. It's by the same authors as the 4U solution authors. They're a pain to scan though.

It's still wrong...

Product rule?