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  1. Arrowshaft

    3U Maths HSC 2019 Solutions

    How many marks do you reckon I’d lose if I made the exact same mistake as you?
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    Mathematics Extension 1 Exam Predictions/Thoughts

    Yeah thats what I did, i think as long as you stated the usual stuff like f(x) is continuous over the interval and there is a sign change you’re good. I think it is fine because they already provided the range that alpha lies between the two values, so you just have to show the sign change.
  3. Arrowshaft

    3U Maths HSC 2019 Solutions

    Oooh I love that merhod! But /sin and /cos lel
  4. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Thanks mate, really nice to hear.
  5. Arrowshaft

    3U Maths HSC 2019 Solutions

    lol I made the exact same silly mistake, the integral isn’t tan inverse, it’s a natural log, as u=cos^2x, otherwise everything looks correct to me
  6. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Actually I argued the exact same with the concavities, but doesn’t seem right to me, hmm we’ll see. Also thanks for the support, it feels better than I’m not the only one going through this :)
  7. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    It’ll be the same scaling but I suppose it’s effect will be doubled on your aggregate score as it counts as two units instead of one.
  8. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Agreed. I think 71 to 89 was most accurate, it could be 80 was the extreme end of an e4 but highly unlikely. 2018 was defs the hardest of the MCQ (post 2011) tests, save maybe 2013, but I think it was also harder than 2013.
  9. Arrowshaft

    Chemistry New Syllabus Advice / Sample Answers by an Experienced HSC Tutor

    Thank you so much, this was very helpful!
  10. Arrowshaft

    Chemistry New Syllabus Advice / Sample Answers by an Experienced HSC Tutor

    Thanks, so can you fudge the numbers to a certain extent? And what if the stochiometric ratios don’t match up for like a qualitative experiment but you just want to convey the ‘trend’, do you still get penalised?
  11. Arrowshaft

    Chemistry New Syllabus Advice / Sample Answers by an Experienced HSC Tutor

    Hey Jazz to what extent would we need to know our pracs like do we memorise all the quantities, or can it be reasonably quantitative. Also, do we need to memorise the pH ranges for indicators?
  12. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Thank you so much! Needed this 😢
  13. Arrowshaft

    Physics Predictions/Thoughts

    I was thinking spectra for 7 and model of the atom for 9
  14. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Thanks 😊. I guess I’m just upset I didn’t perform to my best because of how tired I was from lack of sleep
  15. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Same, I only said that because I had no other option, so I fudged it. Definitely can’t be right though
  16. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Don’t think that’s a valid solution though, because there’s no way to tell if the concavities complete cancel out
  17. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Thanks. I was just expecting way better for myself, I feel degenerate thinking that I even had the possibility of state ranking
  18. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    This is sad, I’d never thought my raw marks would ever come to this, but what would a 62/70 scale to? I legit don’t see the point in living anymore, never thought I’d be this depressed in my whole life 😭
  19. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    I legit feel like killing myself right now, I completely screwed myself over with my silly mistakes. I got 99 in trials and was confident in 3U but only ended up getting 3 hours sleep today because of anxiety, and I now I screwed over the exam with way more silly mistakes than I would’ve though...
  20. Arrowshaft

    Mathematics Extension 1 Exam Predictions/Thoughts

    Yeah how much is would they penalise for getting an inverse tan fun function for the integral instead?
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