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  1. nightweaver066

    Atar Estimate Please :)

    You always get your own exam mark that you score in the HSC. However, if you remain last, you'll get the lowest exam mark out of all three people (you and the other two) as your moderated assessment mark.
  2. nightweaver066

    integration help !

    It seems so lengthy though... How about this: \int \frac{x^3}{2x+1}dx =\int \frac{\frac{1}{2}x^2(2x + 1) - \frac{1}{2}x^2}{2x+1}dx =\int \frac{1}{2}x^2 - \frac{\frac{1}{4}x(2x+1) - \frac{1}{4}x}{2x+1}dx =\int \frac{1}{2}x^2 - \frac{1}{4}x + \frac{1}{8}\times \frac{2x+1 - 1}{2x+1}dx =\int...
  3. nightweaver066

    Double angles : 2 questions

    \frac{(sinA + cosAtanB) \div cosA}{(cosA - sinAtanB)\div cosA} =\frac{tanA + tanB}{1 - tanAtanB}
  4. nightweaver066

    Double angles : 2 questions

    3U topic. 1. cos2A = 2cos^2 A -1 Use that. 2. Divide LHS numerator and denominator by cosx.
  5. nightweaver066

    HSC 2013 Maths Marathon (archive)

    Re: HSC 2013 2U Marathon I hope you didn't perform polynomial division :P If you didn't, it's the same technique applied to the 2nd question.
  6. nightweaver066

    Price elasticity of demand

    Price elasticity of demand is the percentage change in quantity demanded that results from a 1 percent change in price of the good/service. Say we had a highly elastic good that was selling for 10 units for $10 each. If we increased the price to $11, the quantity demanded could drop down to 2...
  7. nightweaver066

    HSC 2013 Maths Marathon (archive)

    Re: HSC 2013 2U Marathon \int \frac{x}{\sqrt{x-1}}dx (no substitution.)
  8. nightweaver066

    HSC 2013 Maths Marathon (archive)

    Re: HSC 2013 2U Marathon \int \frac{x^3}{x^2+1} dx what's wrong with my code ._.
  9. nightweaver066

    HSC 2013 Maths Marathon (archive)

    Re: HSC 2013 2U Marathon This question would trump 3U students lol. Possibly the average 4U student too.
  10. nightweaver066

    Trials vs hsc

    Depends on your school. Scaling was applied to one of my trial exams at my school.
  11. nightweaver066

    Mod B - Speeches: Combinations of speeches

    Do 2 speeches in depth and have an essay prepared for them. Make a paragraph for every other speech on a theme/common idea that links to either one of the two speeches you studied in depth. Saves time and you can talk about 3 speeches in an essay if they specify one (unless the question is...
  12. nightweaver066

    First year transfer, dropping actuarial studies

    I don't think it's possible to "drop straight to commerce" as it's now a separate degree. From the UNSW website: Have a look at this page if you haven't already: https://my.unsw.edu.au/student/academiclife/program_transfer/InternalProgramTransfer.html
  13. nightweaver066

    First year transfer, dropping actuarial studies

    Need any help? Msg me :) I think they do consider your WAM even for first year students. I've heard it's much easier to transfer within your uni than applying to another.
  14. nightweaver066

    MATH 1031: Help with tute questions

    Hopefully i got this right.
  15. nightweaver066

    Is anyone genuinely enjoying what they're doing at Uni?

    Enjoying maths and it doesn't require much study so i'm happy about that :D Also enjoying actuarial science, less than maths though. Eco comes after then finance which is just boring..
  16. nightweaver066

    A line L goes through...?

    \overline{x} = (x, y, z) = (3, 2, 0) + \lambda (1, 2, 3), \; \lambda \in \mathbb{R} x = 3 + \lambda y = 2 + 2\lambda z = 3\lambda Not in the HSC.
  17. nightweaver066

    How to get full marks in a chemistry exam?

    Know EVERYTHING back to front. Know how to answer all types of questions (discuss, explain, deduce, assess, etc), working on structure, and being able to communicate clearly and concisely. Do past papers (that have solutions) under test conditions and mark them strictly. Was there anything...
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