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  1. A

    2011 HSC Past Paper Question

    How do I do part ii? Thanks.
  2. A

    2016 HSC Past Paper Question

    Q(IV) I don't exactly understand the solution to this question. Thanks.
  3. A

    Mechanics Help

    A particle is projected with speed V and angle of elevation alpha from point O on the edge of a cliff of height h. When the particle hits the ground its path makes an angle arctan(2tan(alpha)) with the horizontal. Why is tan(beta)=vertical velocity/horizontal velocity? Thanks.
  4. A

    Binomial Theorem

    https://drive.google.com/open?id=1NRMNrcOf0uy0tUMH4cTgUEj_eegL2jMv Can you please provide working out. Thanks
  5. A

    Conics Help

    https://drive.google.com/open?id=1tckKJxDql38T785s5GPrq-dPQLgbDpCy How would I do question 9b? In particular, how would I calculate secPhi?
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    2001 HSC MC Help

    Why is the answer A? Thanks for your assistance.
  8. A

    Need help with graphs

    Sketch the graph y=(x+1)^4/x^4+1. Use this graph to find the set of values of the real number k for which the equation (x+1)^4=k(x^4+1) has two real distinct roots. I sketched the graph, but I don't understand what I should do after. Thanks for your assistance.
  9. A

    Graphs help

    How would I find the asymptotes for the graph x^2-4y^2=4? Thanks.
  10. A

    Graphs

    For the graph x^3+y^3=1, why is there an asymptote at y=-x? Thanks.
  11. A

    Complex Numbers Help

    Thanks for the help.
  13. A

    Physics Help

    Question 24. Thanks.
  14. A

    Binomial Question

    Use (1+x)^n=(1+x)(1+x)^n-1 to prove that nCk= n-1Ck + n-1Ck-1 Thanks.
  15. A

    Binomial Theorem Help

    Can you please explain the theory of the steps involved in solving this question, as I'm struggling with these types of questions. Also, any tips on proof questions relating to binomial theorem would be much appreciated. Thanks for your help.
  16. A

    Geometry Help

    https://drive.google.com/open?id=0B_RlXPQTW1cRYktRTWhFTGFhcjQ Thanks.
  17. A

    Chemistry Help - Calculations

    https://drive.google.com/open?id=0B_RlXPQTW1cRS0doZjlOQ0E0d0U How do I attempt question b? Any help would be greatly appreciated. Thanks.
  19. A

    Circle Geometry Help

    https://drive.google.com/open?id=0B_RlXPQTW1cRQUlmYURxeWZjZkE Any help would be greatly appreciated. Thanks
  20. A

    Maths Help!

    https://drive.google.com/open?id=0B_RlXPQTW1cRUEhNMmR6RlB1X28 I need help with question c) Any help would be greatly appreciated, Thanks.
  21. A

    Maths Help - 3D Trig

    https://drive.google.com/open?id=0B_RlXPQTW1cRUGtuc3JJTEVPTU0 I need help with question b), I've tried many variations but I couldn't get the correct answer but I'm probably overthinking it, (i just need to know the angle). Thanks for the help.
  22. A

    3D Trig Help 3

    https://drive.google.com/open?id=0B_RlXPQTW1cRaHo2bDNCaWFuOFU I'm unsure on how to approach this question and would appreciate a hint in the right direction. Thanks for the help :)
  23. A

    3D Trig Help 2

    https://drive.google.com/open?id=0B_RlXPQTW1cRREVqWmZRRHU1LTg For a) I used the angle sum of a polygon formula, would this be the correct approach or would I need to do so by other means? For b) I'm unsure on what to do but I'm probably overthinking it. Thanks for the help.
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