cambridgemaths

  1. A

    Different Chapters in Extension 2 Cambridge Textbook

    I was doing chapter 6: mechanics, and for me chapter 6 went up to H with H being the chapter review, but for my friend it went up to I with I being the chapter review and H being a new exercise on resisted projectile motion. But it says they are both published in 2020. Did they make a change to...
  2. Lith_30

    Vertical resisted motion question help

    How do I do part iv?
  3. Lith_30

    Auxillary method question

    How would I solve part a and b.
  4. N

    Cambridge exercises: are they unnecessarily challenging?

    I have a general question. My school currently uses the Maths in Focus textbooks - they're clear, easy to understand, and the homework questions aren't too difficult. I, temporarily, wanted to give the Cambridge Year 11 2U questions a go, and I found that they are quite challenging and vary in...
  5. N

    Difficult question which involves a geometric series

    I'm finishing off holiday work assigned to me before school starts back and I find myself stuck on this question all the time: "In any GP, let Rn = T(n + 1) + T(n + 2) + ... + T(2n). Show that Rn:Sn = r^n:1, and hence find r if R8:S8 = 1:81" This is how the question is printed in my textbook...
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