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I've seen questions which are worth 1 mark and want you to find the chord of contact so I don't know if it's worth deriving it for 1 mark.

Are we allowed to assume the equation for chord of contact for circles, ellipses, parabolas and hyperbolas in Conics?

yeah idk, but do you really think doing as much qs as possible is effective?

goodness me.. whatever then

But does Dr Du really improve your problem solving skills? From what my friend (who went to him) told me, he would give a fkload of homework with hard questions, and then next lesson people would mark it, tell you what you got right and wrong, give you the solution to it, and that's it. Yes hard...

hmm ok.. But I am just curious to whether tutoring centres teach you things that self-studying won't. For example, the various tricks to solve different problems. I mean surely if you want to state rank 4 unit, you should be able to know certain problem solving techniques that textbooks don't...

Thing is I'm looking to work for somewhat of a rank, but from what I heard, Dr Du only gets these ranks cos his students are already mathematically talented, which isn't right for me. I was wondering if it would be worth just learning the course yourself, or would your chances of a rank be very...

like all of em?

Do 4U state rankers usually go to any tutoring place, and if so which one is most common?