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Doing HSC subjects doesn't give you any skills required for uni, it only provides a method of getting into uni. Hence choose subjects in order to maximise ATAR, which are probably subjects you enjoy.

suppose we have a polynomial P(x) where "a" is a root of multiplicity n. so we can write: P(x)=(x-a)^n*Q(x) where Q is another polynomial. Suppose Q(a) is now zero, then (x-a) must be a factor of Q(x) as a is a root of Q(x), so we can write Q(x) = (x-a)*D(x) where D(x) is another polynomial. So...

Given you do 4unit maths, you should keep physics cos: - a good physics intuition in terms of vectors and direction which forces are applied is important for the topic mechanics in 4 unit. - projectile motions in physics is a sinch once you do it in 3 unit. Once again, a good physics intuition...

Yes, you can change your UAC preferences until early January (usually the day when all the main universities hold information days).

This is why you STATE what each letter represents before using it. Using a different letter does not really constitute a different method.

and this is exactly why you make your own notes

23. Four adults are standing in a room that has five exits. Each adult is equally likely to leave the room through any one of the five exits. (d) What is the probability that no more than two adults come out the same exit? Consider the complementary case, if more than 2 adults come out the...

is there anything really that hard about 3 unit?????

(tanx)^2=1/3 or 3 so tanx=1/sqrt(3) or -1/sqrt(3) or sqrt(3) or -sqrt(3) tanx=1/sqrt(3) means x=30 or 210 (remember 0<x<360) and do the same with the rest

Lol... u= (10 +- sqrt (100- 4(3)(3))) / 6 not u= (10 +- sqrt (100- 4(3)(3))) / 2 OR factorise (3u-1)(u-3)=0 and yes there should be 8 solutions

well hidden???? gees i wonder what the more obvious ones look like