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  1. J

    Holiday coaching

    What's the best place for holiday tutoring? So far, i've just found James An and Pre-uni, are they any good? Thanks,
  2. J

    School very behind in Maths?

    My school has just started gemometric applications of calculus in 2 unit and just done parametrics in 3 unit. Are we really behind? Should I get a tutor?
  3. J

    Bipol production?

    For the purification process, is PHA precipitated from the solution (after being dissolved in chlorinated hydrocarbon) or is PHB precipitated from the solution? thanks,
  4. J

    Parametrics

    Hi, I was just wondering how to do this question, a) Show that the point (a cos θ, b sinθ) lies on the curve x^2/a^2 + y^2/b^2 = 1 any ideas??!! Thanks!
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