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  1. Affinity

    Do you really believe your good at 4U?

    By the way, are there any copyright issues with sharing these papers?
  2. Affinity

    Checking calculators for exams

    Doesn't give you much advantage .. unless you smuggle in some serious algebraic packages.
  3. Affinity

    Mechanics Question from Patel

    Probably same as yours.. 1. we know that resisitance r = kv^2, use inforamtion form the first part to work out k: Total Force in the cirection down the slope: F = gm/30 - kv^2 In particular, F = 0 when v = 30, gives k = gm/27000 The seconf part asks you to find the additional Force F up the...
  4. Affinity

    Do you really believe your good at 4U?

    Obsession with past and sample papers is not agood. You really need a few to work out the exam formats and how to pace yourself
  5. Affinity

    White subjects for Yr 11 for good ATAR ?

    Ext 2 maths Adv english Economics Business studies +Hist To get 99 you will need You will neeed mid to high 90s across the board or similar
  6. Affinity

    Do you really believe your good at 4U?

    Post the questions and your attempt then we can tell you if they are right or not
  7. Affinity

    best majors to combine with commerce/science?

    Accounting + Mathematics.
  8. Affinity

    HELP! question involving the irrationality of e

    if e = p/q then (e-s_q)*q! = (q-1)!*p - q! * s_n which is an integer (q! * s_n ----> Check term by term) Which contradicts (c), so you can't have e = p/q for some p,q
  9. Affinity

    imo 2010

    some post on another forum stated that it was due to cheating. IMO 2010 Results - Science, Math and Philosophy Forum That also happened in 1991.
  10. Affinity

    HELP! question involving the irrationality of e

    Consider the case when n = q for the result in (c).
  11. Affinity

    Maths- Need help Q related to Prob

    Problem: 365/365 x 364/ 365 x 363/ 365 x ..... 346/365 I think why you get flamed by jm01 is that you sound cocky
  12. Affinity

    Practice for Q7-8

    But that is almost never true given that all but at most 1 of the a's need to be less than 1. Need to be less generous with the other part to prove the whole inequality.
  13. Affinity

    Practice for Q7-8

    doesn't work.
  14. Affinity

    Practice for Q7-8

    in case someone's not too familiar with the terms: semiperimeter --> 1/2 the perimeter inradius ---> the radius of the circle with the 2 edges as tangents circumradius --> radius of the circle passing through the 3 corners heights -> perpendicular distance from a corner to the opposite edge
  15. Affinity

    Easy question

    let T = (x,y) then (x-cp) + p^2 (y - c/p) = 0 x + (p^2)y = 2cp x + (q^2)y = 2cq x = 2c / (p+q) y = 2cpq/(p+q) = 2c / (p+q) = 2c / (p + 1/p) so the line's x=y , x in [-c,c] as p + 1/p >= 2 or p + 1/p <= -2 EDIT: thought about it again if we allow p = q then it's the above line segment + 2...
  16. Affinity

    another unsw vs uts thread.

    what "you" here refers to: University Marks Any other Qualifications Intern experience Extracurriculars Your impression at the interview. So marks are still a major factor here as it is probably the best availalble measure of performance in your most recent main occupation. But the...
  17. Affinity

    rates of change question

    This: dv/da=(1/3)*r, the problem here is r is not a constant with respect to a. correct statement is : dv/da = 1/2 r v = a * r/3 v = a * 1/3 sqrt(a/4pi) v =a^(3/2) * 1/3 sqrt(1/4pi) dv/da = 1/2 sqrt(a) *1/sqrt(4pi) = r/2 alternatively v = a* r/3 dv/da = {da/da } * r/3 + a * d/da [r/3] =...
  18. Affinity

    ANU vs UNSW vs USYD vs Melbourne vs Macquarie finance/commerce?

    Re: ANU vs UNSW vs USYD vs Melbourne vs Macquarie for finance/commerce? Melb/ANU/UNSW.. but if I was in your position I would rather stay in Taiwan
  19. Affinity

    Syllabus development

    the draft says E = V + 1 when it should be E = V - 1
  20. Affinity

    Syllabus development

    There's a wrong statement at the bottom of pg 8
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