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  1. Sy123

    Help! Hard magic square?

    So can you do most of the questions in the thread?
  2. Sy123

    Help! Hard magic square?

    lolnope Scoff at (1+costheta + isintheta) and not provide a solution.
  3. Sy123

    to james ruse people out there

    There are some schools where everyone does 4U Maths I think it was one of the Sydney ....... schools Maybe Sydney Boys or Sydney Grammar, not sure which
  4. Sy123

    Help! Hard magic square?

    What a horrible way to test someone's intelligence No wonder people say psychometric tests are inaccurate
  5. Sy123

    Help! Hard magic square?

    Sounds like utter bs to me
  6. Sy123

    Help! Hard magic square?

    I reckon its a question with no definitive answer, and that possibly all of them could be potential numbers. But that the point is to find a way to get those numbers.
  7. Sy123

    Help! Hard magic square?

    My attempt: Call ? = x 6 + 32 + 8 = 46 4 + 21 + 4 = 29 3 + x + 12 = x + 15 Now the first two results have a difference of 17. So the last two must have a difference of 17 This x + 15 = 29 - 17 x= -3
  8. Sy123

    Help! Hard magic square?

    What kind of magic square is this? In a magic square each diagonal, row and column must add up to a constant number That is clearly not the case here.
  9. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon Naturally at x=1 1/ln(x) is infinite so it is covered already by drawing the reciprocal
  10. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon If you learn latex then no it doesn't take much time at all. If you are a fast typer, know latex well then the big blocks of latex I sometimes post don't take very long to write up.
  11. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon The only restriction that I can see is x > 0 which comes via default. am I missing something?
  12. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon By change of base law: \log_x e = \frac{\log_e e}{\log_e x} = \frac{1}{\ln x} And its straightforward graph manipulation from there.
  13. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon Really? I derived it myself.
  14. Sy123

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon $The ellipse$ \ \ \ \frac{x^2}{a^2}+ \frac{y^2}{b^2}=1 $Has 2 points$ \ \ P(a\cos \theta, b\sin \theta) \ \ $and$ \ \ Q(a\cos \alpha, b\sin \alpha) $The tangents at the points P and Q intersect at R at a right angle$ $i) Prove that the locus of R is a circle with...
  15. Sy123

    Year 12 2013 Chit Chat Thread

    Re: The p00n thread My english teacher is a HSC marker and knows what bullshit is and what isn't. He will dock you marks for not making sense, so don't try and bullshit stuff in English, it may work internally due to teachers not knowing how to mark, but in the HSC it won't work...
  16. Sy123

    The Problem with Rote Learning

    But in the end its only a very few amount who are like this. Its not like they are taking your band 6s or 99s away from you.
  17. Sy123

    The Problem with Rote Learning

    2nd Round of discussion: Should we lower the quality of education to give everyone a fair go?
  18. Sy123

    People don't know HOW to learn.

    I agree with you 100% http://community.boredofstudies.org/showthread.php?t=297120
  19. Sy123

    Year 12 2013 Chit Chat Thread

    Jesus, give the guy a break, he knows what he did wrong so leave him alone, what if he feels bullied by this.
  20. Sy123

    How do you do this General Maths question?

    Because I noticed that my value was A LOT compared to the original value. Then I noticed I missed out the % sign in my calculator :s
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