• Best of luck to the class of 2019 for their HSC exams. You got this!

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  1. integral95

    BoS Maths Trials 2019

    I honestly don't recall learning the inverse function theorem until first year uni to be fair (and basically never used it from 2nd year and later) , so I doubt the majority of the high-school students would even consider it. Please share some more rants pls this is hilarious.
  2. integral95

    BoS Maths Trials 2019

    x = tan\theta
  3. integral95

    BoS Maths Trials 2019

    Wow this is definitely harder than the previous years. I see that Carrotsticks having extra assistance from former BOS members (who are also math whizzes :P) definitely revoluntionised the content. However, with the new syllabus being implemented, I wonder what mathematical theorem do you plan...
  4. integral95

    BOS maths extension 2 trial exam 2018 E4 cutoff

    You can't compare the BOS trials with the HSC. It's just at a completely different level since it's specifically aimed to challenge the students who have mastered virtually every single topics, i.e people who have the potential to easily achieve 95+ HSC. Even if you did do badly, it wouldn't...
  5. integral95

    PDF files of new textbook.

    Hey so what textbooks would you recommend with the new Stage 6 math new syllabus (2U/3U/4U) Also, does anyone have any pdf files of those?
  6. integral95

    Exponential Growth and Decay Help?

    When you're finding the rate, or how fast or slow something is, you use the derivative expression. so for c) you find dS/dt and then sub in t = 5 and your value of k from part b), that's your rate. d)sub S = 4 (as that's the amount that's left undissolved ) and your k from b) Then you solve...
  7. integral95

    Tips on how to avoid making silly mistakes?

    The problem with checking your answers over, is that sometimes you would think it's right in the back of your mind so it could blind you from seeing the mistake. What I would do is that I would read the question thoroughly a few times (even though it's something I'm familiar with), and then do...
  8. integral95

    parametrics question

    True that, you should change tan^2 to sin^2/cos^2 then simplify to get \frac{sin^2 \theta}{tan^2 \theta} Then sub the equations from my 2nd line.
  9. integral95

    parametrics question

    xy = tan^2 \theta - sin^2 \theta x + y = 2tan \theta \ \ \ y-x = 2sin \theta xy = (\frac{x+y}{2})^2 - (\frac{y-x}{2})^2
  10. integral95

    Need help understanding the new HSC Maths course

    I'm not sure what you mean by "New" HSC Math courses (you mean progressing to senior or a complete revamp in the content?) Anyhow, all I can say is that you general math is basically learning applied "real life" math like finding areas and doing some basic finance stuff you might encounter in...
  11. integral95

    Ability

    My parents and relatives would talk about how my mum and dad did really well in math back at school in China. I'm not sure if it's legit or not haha but I was able to gasp at most concepts a bit better than the average student so I guess it's a factor.
  12. integral95

    Inequality Proof (fitzpatrick review 8, q5d)

    That's not even true since you're squaring a number less than 1 0<ln(2)<ln(e) = 1 \\ \\ ln(2) > (ln(2))^2 2ln(2) > (ln(2))^2 \Rightarrow 2 > ln(2) At the moment I still can't figure the lower bound either.
  13. integral95

    Exponential and Log Function Question Help

    I think you mean \frac{1}{2}(e^2-1) Also I'm not sure how you got that integral cause the integral is suppose to be simply \int_0^2 e^x \ \ dx
  14. integral95

    Can someone explain how to do this question [Limits Question]

    In order to find the horizontal asymptote, you need to take the limit as the x-value approaches infinity. You also need use this concept. lim_{x \rightarrow 0} \frac{sinx}{x} =lim_{x \rightarrow \infty} \frac{sin(\frac{1}{x})}{\frac{1}{x}} = 1 lim_{x \rightarrow \infty} \frac {x^2...
  15. integral95

    Parametrics Help

    Note that is says distinct points so that already implies p \neq q You can easily see that's true if you simply observe the equation mQRmPR=-1. which leads to (p+1)(q+1) = -4 and you'll understand that p and q can't be -1 as you'll get zero. However also observe that both p+1 and q+1 can't...
  16. integral95

    What is the famous line that your teacher has said that you won't forget ?

    "Smile life could be worse, you could be married to *random weird name*" My Highschool Math Teacher.
  17. integral95

    Need help with a question.

    Yeah that's because this not your straight forward "top minus bottom" kind of question. First you should draw out the curves, then find the point of intersection (which is x = 1 by inspection) The area given above is \int_0^1 \ x^3 \ \ dx + \int_1^{\frac{4}{3}} \ \ -3x + 4 \ \ dx = \frac{5}{12}
  18. integral95

    Semester 2 2018 Results Discussion Thread

    Yeah the report shows that time. But I actually received my email at 5:39 PM.
  19. integral95

    Semester 2 2018 Results Discussion Thread

    Alright zID 501 Issued at Tue Dec 4 16:47:02 2018 Received the email at 5:39 PM Hehe a pretty crap semester for me, but I'm just happy that I survived all of them and thus my undergraduate life is officially over.
  20. integral95

    Semester 2 2018 Results Discussion Thread

    The hype is almost ready
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