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Transient Building, University of Sydney :

have you done logarithms ? (I'd assume you've set up the inequation to solve) if yes, take the log of boths sides of the inequation (think about whether or not this changes the inequality sign and why) if not , trial and error method should suffice at this stage

+1

raw mark(you don't know this unless you request for it) -------aligned---------> hsc mark (the one you got today) ------------scaled -------------> scaled mark (used by UAC to calculate ATAR for tomorrow)

her assessment marks will NOT be her HSC mark different schools set assessments of various difficulty don't get frustrated about such "low" marks, what's important is the rank inside the school and the performance of the whole cohort of the school taking the school ranking (level of...

+1 also note cos(a+b)=cos(a)*cos(b)-sin(a)*sin(b) and cos(a-b)=cos(a)*cos(b)+sin(a)*sin(b)

if you'd like to use the double angle formula, the polynomial you get is a quartic

+1 you should be able to get 4 solutions from HeroicPandas' method

3rd or 4th year of university ? at usyd, it's 4th year(Honours) You might be able to do it in undergrad at other universities

Florica FTW

what do you think would be the major difference between IB and HSC for maths?

I think OP's problem with physics is the way her teacher/school is treating it (method of teaching, quality of assessments, etc. ) by quality of assessment, I mean they may be testing something totally irrelevant to the HSC or the nature of assessment is unfair...

yes, actually I do understand your situation I think many people are in the same boat just drop it if you want, there's no point putting yourself in a classroom you dislike for a year but do keep in mind that it's a good idea to learn the important stuff as hsc physics is assumed knowledge

In terms of optimizing your ATAR, physics may not necessarily be the bad choice if you consider scaling and size of cohort And as you've mentioned, it would also be more relevant to an Engineering degree But if you really dislike physics for whatever reason (bad teacher, unfair assessment etc...

what's your ranks like in phys and food tech ?

but if you find 4u maths alright, why would you find physics to be difficult?

one of my friends went to the physics olympiad summer school and did not get a band 6 in HSC physics (I'm pretty sure he can if he bothered to learn all that stuff)

how is your maths ?

in general, no but if |z|= 1 then z= cis theta, and 1/z= cis 0 / cis theta = cis (-theta)= z bar