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  1. undalay

    4U Revising Game

    the point P(x0,y0) lies on the hyperbola x2 / a2 - y2 / b2 = 1 (i) Show that the acute angle @ between the asymptote satisfies tan@ = 2ab / (a2 - b2) (ii) If M and N are the feet of the perpendiculars drawn from P to the asymptotes, show that MP.NP = a2b2 / (a2 + b2) (iii) hence...
  2. undalay

    Challenge Questions

    1. Contact Australian national university and enquire, if you can't find anything on the web.
  3. undalay

    Complex Number Questions

    1 \< |z+2| \< 3 the bigger circle is that graph. edit: biggest.
  4. undalay

    Complex Number Questions

    just draw the diagram : O?
  5. undalay

    Screw HSC markers

    It isnt a remark as a such Kujah, but rather they check for clerical errors, i.e. typed ur marks wrong into the computer.
  6. undalay

    Screw HSC markers

    I think u should "get a grasp of reality" and accept this fact :]
  7. undalay

    UAI estimation please

    Runnable, schools that are below a certain rank...say 50ish, are not stable. I.e. The schools rank will flactuate GREATLY every year. So it's hard to determine anything. I'm sure many schools could change up to 400 ranks every year. Only schools that peform consistently, such as...
  8. undalay

    What topic are you currently studying in 4 Unit?

    some polynomials questions are tricky :]
  9. undalay

    Integration by parts. Find S Sin(x)Cos(x)

    ronkee its sin^ m (x) cos^n (x) not sin^ n(x) cos^n(x) the powers are different.
  10. undalay

    Year 11 > Year 12

    For me: Yr 12 >>>>>>>>>>>>>>>>>>>>>>>> Yr10 > Yr11 In year 11, if you choose subjects your enjoy, then it is less stressful then yr 10 (where you have stupid subjects. However in Year 12, you'll stress about your assessment marks, where as in year 11 it doesnt really...
  11. undalay

    You Aye Eye. estimate meh!!

    If u get 4 credits ( and 1 decent band 5) , u'll be in the 97-98 range. Its not ez
  12. undalay

    You Aye Eye. estimate meh!!

    u need 2 do much better. simple. Top 25% of every subject atleast.
  13. undalay

    Extension Mathematics - Polynomials

    2x^3 + 4x^2 - x +8 = (x^2 -3x +2)(2x+8) + 19x - 8 2x^3 + 4x^2 - x +8/(x2 – 3x + 2)=[(x^2 -3x +2)(2x+8) +19x-8]/ (x2 – 3x + 2) = 2x+8 + (19x-8)/(x2 – 3x + 2)
  14. undalay

    values in high school/uni?

    foram will never win lol.
  15. undalay

    Is it true

    yes
  16. undalay

    Removed HSC question.

    Oh I see Care to explain :] ?
  17. undalay

    Removed HSC question.

    ??? Q5: An astronaut set out in a spaceship from earth orbit to travel a distant star in our galaxy. The spaceship travelled at a speed of 0.c. When the spaceship reached the star the on-board clock showed the astronaut that the journey took 10 years. An identical clock remianed on Earth...
  18. undalay

    Removed HSC question.

    I'm not 100% sure. I've heard people mention this while browing these forums. Also, whats the deal with Q5 2003 HSC. In my success one book it says. No answer.
  19. undalay

    Removed HSC question.

    Does anyone know the removed relativity hsc question in 2007? or was it 2006? any official links / publications would be much appreciated. or maybe it was some other year.. :
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