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  1. Masaken

    polynomials qn

    yeah oops, i think i had a mindblank there (looking back i think i was thinking about the remainder theorem even though the remainder theorem is only for linear factors 💀 💀 💀 ). thank you!!
  2. Masaken

    polynomials qn

    how would you go about solving this? thanks in advance
  3. Masaken

    graphing transformations

    In the old syllabus, was graphing transformations (from Further Functions I think) part of the the Preliminary Extension 1 syllabus? (Stuff such as y = |f(x)|, y^2 = f(x), |y| = f(x) and all that). Was looking through the all the past papers of the old syllabus and none of those kinds of...
  4. Masaken

    perms and combs circle qn

    Four boys and four girls are arranged in a circle. In how many ways can this be done, if the boys and the girls are in distinct groups? Would it be 4! x 4! (because you only need to mix around the boys and girls separately) or 3! x 4! (fix one boy first) ? I've received conflicting answers on this.
  5. Masaken


    Thanks a lot, will take note of that in the future
  6. Masaken


    A curve is defined parametrically by the equations x = cos theta + 1, y = 2sintheta - 3. (a) Find the Cartesian equation of the curve. (b) Describe the curve, and then sketch it. I ended up getting (x-1)^2 + [(y+3)^2/4] = 1 for the Cartesian equation, and while I know it's an ellipse I've no...
  7. Masaken


    are ellipses anywhere in the extension 1 course (+ more precisely, year 11 in the new syllabus)? wondering because a maths qn i'm doing is asking me to sketch an ellipse after finding its equation and i have no idea how to do it
  8. Masaken

    Synonyms for...

    repercussion? --> has a negative connotation
  9. Masaken

    perms and combs qn

    how would you do this with perms and combs? the worked solutions are using a probability tree and i think there's probably an easier way to go about this question, many thanks in advance
  10. Masaken

    perms and combs qn

  11. Masaken

    perms and combs qn

    (The answer is B, and I know the total number of ways without restriction is 9C3 but I have no idea how to get to the answer, many thanks in advance)
  12. Masaken

    motion in straight line qn

    thank you!!
  13. Masaken

    motion in straight line qn

    hey all, how would you do c and d? many thanks in advance (i've done a and b, and the answers are: for part a 50km/h for Car A and 20km/h for Car B, and for part b the answer is 9 minutes (t = 0.15)
  14. Masaken

    vertical tangents and cusps

    are you able to tell just from a given equation of a curve whether it has a vertical tangent or cusp?? if so, how?
  15. Masaken

    how to interpret this question

    not sure what to do with the given information + where to start, many thanks in advance
  16. Masaken

    chemistry qn

  17. Masaken

    chemistry qn

    how would you do this question, and what is the answer? many thanks in advance
  18. Masaken

    9b, a bit confused (calculus)

    my school posts pdfs of the worked solutions on their moodle, so they might be a teacher-only-accessible thing that they ended up sharing with us students so i'm not sure, sorry D:
  19. Masaken


    how would you start this one?
  20. Masaken


    molar concentration/molarity is in the units mol L-1, so you'd need to convert the mass of hydrogen peroxide to moles first, then use c = n/v