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  1. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    you find T_(k+1) and T_(k+2) and equate the co-efficients
  2. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Yea
  3. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Also do you get your actual paper back if you buy raw marks from nesa and what you got wrong indicated?
  4. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Hope so, i think i got around 95% raw cause of dumbass sillies, hopefully that can align to a 98 fingers crossed
  5. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Oof, that’ll be a tough one, depends on the marker really; I think probabilistically yes, because it did ask for k in terms of alpha explicitly.
  7. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Yeah I saw someone’s solutions, you find alpha in terms of x0 from the expression in (i) and then sub it into sin(x0)
  8. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    But yeah, I got stuck on it too.
  9. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    wait ahah I meant 14 c ii not b ii lool
  10. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Probably 99 or 100
  11. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Careful, it’s not always 1, the denominator is actually | cos x | and it happens to be 1 for the given domain because cos is > 0 in that domain
  13. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    The way I worked out the inverse was that since the domain for f(x) was x>=-1, the range for f-1(x) was y>=-1, and then solved it from there there graphically
  14. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    So that state rank coming home? 😉
  15. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    No wonder as well, topped 4u in Girra haha
  16. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    nice! I had about 50 because I spent too long on c ii, otherwise I would’ve completed in an hour I’d say, like trials
  17. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Na, I suspect Ngo and Sons should release in the next 12 hours like they usually do tho
  19. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    What?
  20. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    The rest wasn’t actually “difficult” I’d say, just ploughing through algebra 🤷‍♂️
  21. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    I did everything else, kinda fudged part (ii) of the last question though
  22. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    How long did we finish the paper in guys?
  23. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    My dumbass didn’t realise that it asked for OA and just gave the x coordinate of the thing.
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