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  1. seanieg89

    Q16

    holomorphic question?
  2. seanieg89

    Section I - Multiple Choice

    No, 10 is b). I and several others have explained why earlier in this thread.
  3. seanieg89

    Q14

    Re: General Thoughts: Mathematics Ext 2 Just did it quickly so may be wrong, but got ar^2/3.
  4. seanieg89

    Section I - Multiple Choice

    Re: General Thoughts: Mathematics Ext 2 No. It is B.
  5. seanieg89

    Section I - Multiple Choice

    Yep, first and fourth have odd integrands and are zero, third one is negative.
  6. seanieg89

    Section I - Multiple Choice

    Your teacher isn't very good, it is B.
  7. seanieg89

    General Thoughts: Mathematics Ext 2

    Prediction: Average mark will be higher as a percentage than some past years, but there will be less clustering at the top...the hardest questions weren't worth very many marks.
  8. seanieg89

    General Thoughts: Mathematics Ext 2

    And some parts of Q15/16 take a bit of care to prove properly. I have a feeling some people might overestimate their marks in these sections.
  9. seanieg89

    General Thoughts: Mathematics Ext 2

    Re: Scanned copy of 2012 paper A good paper I think, should do a reasonable job of distinguishing students fairly.
  10. seanieg89

    Where do you reckon is the best suburb to live in Sydney?

    As a place to live in your early 20s I reckon -Newtown -Glebe -Inner west
  11. seanieg89

    How to approach study?

    Honestly sleep is more important than studying a few extra hours man, that's the best advice I can give you. As for your actual studying just crunch through exam papers that you have solutions to, focussing on perceived weak points...its too late for any other kind of study really.
  12. seanieg89

    The 'derivative' of a sequence.

    Probably, I have not done much informatics. It is a pretty natural construction to make, (as is the summatory analogue).
  13. seanieg89

    The 'derivative' of a sequence.

    The induction question is very much high school maths. The exploration at the end is only for people who want to look at it further.
  14. seanieg89

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) Honestly not that difficult, maybe think about how you would try to prove the analogue of this theorem for functions: f is killed by taking finitely many derivatives if and only if f is a polynomial :). Because differentiation is more familiar this should be quite...
  15. seanieg89

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) Yep, notation is a little funky but the idea is right, a constant sequence will get killed straight away by the operator '. Compare this to the behaviour of a constant function being differentiated :).
  16. seanieg89

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) Yep, notation is a little funky but the idea is write, a constant sequence will get killed straight away by the operator '. Compare this to the behaviour of a constant function being differentiated :).
  17. seanieg89

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) Yep, exactly. The question itself is a pretty standard induction...but it raises other interesting questions about this construction.
  18. seanieg89

    HSC 2012 MX1 Marathon #2 (archive)

    Re: HSC 2012 Marathon :) First part of this question is a 3U induction if you replace the word complex with real :). http://community.boredofstudies.org/showthread.php?t=292775
  19. seanieg89

    Proofs ! Urgent Help

    If you can find something wrong with Jiang's work you might still be able to, he is very highly respected in the mathematical community though so it is probably safest to not.
  20. seanieg89

    Proofs ! Urgent Help

    They are both false, as proven here: http://vixra.org/pdf/1203.0019v2.pdf by chun-xuan Jiang.
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