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  1. J

    hsc 1987

    Can someone please show me how to do question 7? I couldnt do any of it. Hopefully tomorrows hsc doesnt have a question like this
  2. J

    solutions to older hsc papers

    Hi guys I have the green 3u excel succrss one book from 1992-2012 . Are there any solutions to 1984-1991 papers online?
  3. J

    simplified logs

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  4. J

    inequality induction

    Hi guys For inequality induction during step 2, do we keep the inequality sign or do we swap to an equal sign? If you dont get what i mean look at the picture (inequality kept on right side, swaped to equal side on left side). In every textbook I've seen, in every hsc solution, in another...
  5. J

    numerically greatest term in binomial theorem

    Hi guys, when a question asks for the numerically greatest term, which working out do i do? so for e.g find the numerically greatest term of (1-2x)^9 when x = 1/3 My teacher says use the fitzpatrick book method which is "consider (1+2x)^9 because were finding numnerically greatest term" and...
  6. J

    Abbreviated circle geo reasoning allowed in hsc?

    Hi guys, at my school my teacher says were allowed to abbreviate our reasoning so for example instead of "angle between chord and tangent is equal to the angle in the alternate segment"we can write "alternate segment theorem", instead of "angle sum of straight line" we can write "st. ln." We're...
  7. J

    Hard Geo and sqsrs question from james ruse 2006 trial

    Hi guys, for some reason the solutions were missing two pages so I wasnt sure of the answer in question a) ii) and I actually dont know how to do b i) ii) . Can someone please show me how to do b i) ii)
  8. J

    When were the last changes to the maths extension 1 syllabus?

    Hi guys, I have been doing past papers recently and I was wondering when were the last changes to the maths ext 1 syllabus? I'm asking because I want to only do past papers after the significant syllabus changes. The only syllabus changes I know are the addition of multiple choice and the...
  9. J

    Projectile motion question from Fitzpatrick

    Hi guys I've been stuck on question 12 of ex25d for a while now. Can anyone show me how it's done?
  10. J

    Last dot point of The World Communicates

    5.1 Identify types of communication data that are stored or transmitted in digital form My teacher said that the answer to this dot point is "anything on the computer such as CDs/DVDs". I am a bit confused, as I think the answer should be something more like "internet, phone calls and...
  11. J

    chemical earth physical changes

    Hi guys , I was reading about physical and chemical changes from a variety of sources and I saw that some sources said that in physical changes, particles are rearranged while other sources it says only chemical changes involve rearrangement of particles. Im writing notes now and im really...
  12. J

    Inverse Trigonometry Question

    I am having trouble with part (ii). I know you have to use part (i) but I dont know how to properly explain
  13. J

    Proving chord of contact?

    Hi guys, I know that sometimes the question will ask you to prove the parametric versions of tangents, normals and chords but I've never seen a question that asks to prove the chord of contact formula. Do we ever have to prove the chord of contact formula in tests? I find the proof a bit...
  14. J

    Polynomial question

    When a polynomial is divided by (x-3)(2x+1), the remainder is (3x-1) Find the remainder when P(x) is divided by (2x+1) does anyone know how to solve this? I tried p(-1/2) = 0 + 3*(-1/2) -1 = -5/2 but that's not the right answer
  15. J

    Weird trig equation

    My friend showed me this equation which i couldn't do: [cos(x)]^2 +7sin(x)cos(x) = 3 (sorry I dont know how to use latex) I tried using double angle formula but I cant find a solution can someone please show me how to do it? thanks!
  16. J

    When do you pick 4u maths/eng ?

    Hi everyone, I was just wondering, when do we choose whether we want to do extension 2 maths or english for the hsc? Im guessing its at the end of year 11
  17. J

    Polynomials : sum of 2 roots = 0

    Hi all, I'm having trouble with this polynomial question: After I write out all the root-coefficient relationships I'm stuck. Can someone please show me how to solve the question using only root-coefficient relationships (without doing long division or "inspection") Thanks :)
  18. J

    Polynomial question

    Hi everybody, For question a) I cannot figure out how to properly rearrange the question so that I can sub in numbers. Ironically, I managed to do b) The answer in the textbook is 9 Thanks!
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