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  1. HeroWise

    NESA Casio calculator ban debacle

    What is this. I got used to the fx 100 AU. And I also bought a spare one for next year.....
  2. HeroWise

    What raw marks in extension 2 generally correspond to state ranks?

    Man, thats wonderful! Definitely top 5!,, Rooting for you man The recent years dropped you down a bit, any reason why?
  3. HeroWise

    What raw marks in extension 2 generally correspond to state ranks?

    No resits right? They are the marks for the first time you did the paper?
  4. HeroWise

    What raw marks in extension 2 generally correspond to state ranks?

    Have you done the papers before? Or seen similar questions like those?
  5. HeroWise

    CSSA 2019 Extension 2

    Hello! I didnt do it, but how was it? Heard was a hard exam?
  6. HeroWise

    Modular arithmetic allowed in the HSC?

    i am sorry for not being able to ask a clear cut question. Have used mod arithmetic for many problems, i love doing olympiad questions in my free time. There are many tools that I can just quote and use. But in HSC its a different ball game. They have asked power series in the past. If you...
  7. HeroWise

    Modular arithmetic allowed in the HSC?

    Question shouldve stated "hypothetically " rather. enamored with olympiad questions sorry
  8. HeroWise

    2U - CSSA 2019 TRIAL

    It was pretty good tbh. Question 16 took a while. Seems like Examiners are liking their geometry suddenly.
  9. HeroWise

    Modular arithmetic allowed in the HSC?

    Are things such as modular arithmetic, which is SO COMMON, not allowed at all?
  10. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    How are you supposed to know phi is a good sub here? I mean looking at the original question alone
  11. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    Yeah i tried to factorise it but got too much. Will probably try again later tnight
  12. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    What book are these questions from?
  13. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    3rd one was tooo hard. Had a peek at it. Got up to sophie germains and gave up
  14. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    For no 2 im getting 1/2. Can someone check? Probs a typo
  15. HeroWise

    HSC 2018-2019 MX2 Integration Marathon

    1.~~\int_{0}^{\infty}\frac{dx}{(1+x^2)^2}~~~(\mathrm{Ans}:~\frac{\pi}{4}) 2.~~\int_{0}^{\infty}\frac{x}{(1+x^2)^2}dx~~~(\mathrm{Ans}:~\frac{1}{2}) 3.~~\int_{0}^{\infty}\frac{dx}{1+x^4}~~~(\mathrm{Ans}:~\frac{\pi\sqrt{2}}{4})...
  16. HeroWise

    Will 2U show up on my HSC transcript if I am taking 4U?

    It still counts towards a "nominal band 6" if you are an accelerant
  17. HeroWise

    Weird circle

    Sorry for the realllly late reply, but is it possible to do a rough sketch of it, I already got what you said, Im just confused to how you get numbers in this case,
  18. HeroWise

    The Shittest Movie Ever.

    ThE aMaZinG "BuLk"
  19. HeroWise

    perms and combs

    C1) 2 Alike 2 Alike 3C2* 4!/(2!2!)=18 C2) 2 alike 2 different 3C1 * 7C2* 4! /2! = 756 C3) all different 8C4 *4!=1680 Add that to get 2454 CAME is 2*2*1*1 /2454 = 4/2454
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