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  1. Hamburgler

    ATAR results/reveal thread

    YOO NSW HSC 2022: EngAd 90 6 MathsX1 96 E4 MathsX2 94 E4 Music1 99 6 Phys 93 6 English internal was 85 ☠️ but 94 external wtaf
  2. Hamburgler

    MATHS AND SCIENCE TUTORING

    I can put a good word for Aritra, hes quite active in our school discord and eager to pitch in and help. Nice seeing you here Aritra!
  3. Hamburgler

    [SOLD] Selling Excel Success One Math Extension 1 and Physics (No Markings) 2022 Edition

    I have used both but there are no markings as I did them on an exercise book. Sold.
  4. Hamburgler

    Exponential Function sketching

    As x-> inf, y approaches inf as e^x is far bigger than x in e^x/x so numerator overpowers it significantly As x-> -inf, e^x approaches 0, hence y approaches 0 from the bottom
  5. Hamburgler

    binomial expansion

    As for part C consider integrating both sides in And letting x=-1
  7. Hamburgler

    binomial expansion

    Consider expansion of
  8. Hamburgler

    ATAR ESTIMATE PLS?

    I would have to say 88 - 89 currently (somewhere in the ballpark), which is definitely not indicative of his final atar as a banger externals would carry to 90+. Study hard!
  9. Hamburgler

    roots of unity kinda

    w^32 = w ^ (6*5 + 2) = w^2 = cis(2pi/5)
  10. Hamburgler

    How to solve this binomial expansion?

    Because both are symmetrical. (1+x)^n = nCr * 1^r * x^n-r = nCr * 1^n-r * x^r If you stick with one, u have to use the same one i.e. can't use one this way and the other that way
  11. Hamburgler

    How to solve this binomial expansion?

    Apologies for lots of scribbles.
  13. Hamburgler

    How to solve this binomial expansion?

    You did it wrong, you can’t use same k values u have to use different ones. Consider what I have done.
  14. Hamburgler

    How to solve this binomial expansion?

    Consider double sigma notation, collating like x terms into one single power
  15. Hamburgler

    Locus centre

    That is correct, but circle geometry is out of syllabus so use this as a last resort.
  16. Hamburgler

    Locus centre

    Consider what I have done
  17. Hamburgler

    parallel vectors qn

    Parallel to X-axis means in the form of: So for what x values is j=0?
  19. Hamburgler

    Locus centre

    Obviously not the full circle but just the part below the x-axis, but its centre is -1,sqrt(3) so above x axis.
  20. Hamburgler

    When do Encore Nominations come out?

    It was already out, its on students online messages. I received mine and so did my friends today at 3pm.
  21. Hamburgler

    Can you do this?

    u need to convert to 1/2 - 1/2cos2x then integrate that x/2 - 1/4sin2x
  22. Hamburgler

    Can you do this?

    diff of that is yes d/dx(sinx)^2 = 2sinxcosx = sin2x
  23. Hamburgler

    Can you do this?

    yes - chain rule
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