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  1. N

    The 2004 HSC - Mathematics Extension 2 Paper

    they virtually gave you the answer for the induction question in the first bit..it was simple
  2. N

    The 2004 HSC - Mathematics Extension 2 Paper

    id be inclinded to say 75 out of this paper would be low band 5, the difficulty wasnt there
  3. N

    The 2004 HSC - Mathematics Extension 2 Paper

    agree it was damn easy...i mean what was hard about it??..hopefully i can get about 110 im sure ppl will get perfect scores tho
  4. N

    intergration question

    heres a decent alternate solution / 5t^2+3 (1996HSC, Q1,c) | t(t^2+1) / = I<sub>n</sub> (5t<sup>4</sup>+3t<sup>2</sup>) / (t<sup>5</sup> + t<sup>3</sup>) (times num/ denom by t^2/t^2) = log<sub>e</sub>(t<sup>5</sup> + t<sup>3</sup>)
  5. N

    Hardish integration

    S Sin^6x dx = S Sin^6xcosx / cosx dx ( * by cosx/cosx) let u = sinx, du = cosx dx = S u^6 / cosx du but u = sinx, therefoce sqr(1-u^2) = cosx = S u^6 / sqr(1-u^2) du - which is simple to integrate
  7. N

    harder 3U Q

    hehe usually i dont post anymore but im in a good mood from my umat scores :) (btw it would be good if someone got latex or some math program for this board like other maths forums do) anyway area under y = lnx (from 1 to n) > area under sum of trapeziums from 1 to n nlnn - n + 1 >...
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