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Recent content by mathsbrain

  1. M

    A general question for limits

    Was just trying out a few things with first principles and got stuck at one point: \lim_{x\to 0} \cfrac{\sqrt{x^2+x^3}}{x} can someone help?
  2. M

    help for proofs

    damn...this is tough, can anyone help?
  3. M

    help for proofs

    I am fine for the first part, not sure how to do the HENCE part...it could have been easily done with letting f(x)=e^x-1-a^2 and showing its always positive...but the HENCE...
  4. M

    Hardest Topic - New syllabus

    Hmm I fail to see how this hint helps with part (ii), are we talking about the same Sphere question that's on this page? Do you happen to have the link for the nesa sample link?
  5. M

    Hardest Topic - New syllabus

    can anyone help?
  6. M

    Hardest Topic - New syllabus

    also 5u, in this solution of yours you mentioned use part (i), what is part (i)?
  7. M

    Hardest Topic - New syllabus

    sorry i meant part 3 of this question
  8. M

    Hardest Topic - New syllabus

    can someone show the working for part 3 of this question please? been stuck for a looooonnnnggg times lol
  9. M

    Implicit Differentiation

    I saw on page 591 in Cambridge 3unit year 12 textbook for example 25, they used implicit differentiation to solve the question, is this examinable under the new syllabus?
  10. M

    Is implicit differentiation still in the syllabus?

    I saw on page 591 in Cambridge for example 25, they used implicit differentiation to solve the question, is this examinable under the new syllabus?
  11. M

    Organic Chemistry: Reactions help!!

    hi guys,is there any good past papers website for 2018 onwards new syllabus?
  12. M

    Hardest Topic - New syllabus

    thanks so much!
  13. M

    Hardest Topic - New syllabus

    can you show this in extended working please?
  14. M

    HSC Maths Ext2 Questions + Answers

    can someone plz help with solution?
  15. M

    HSC Maths Ext2 Questions + Answers

    here is a hard one, please have full working out
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