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  1. Frostkruncher

    Personalised HSC Timetable Dates

    English (Advanced) Paper 1 - 14th October English (Advanced) Paper 2 - 15th October Mathematics Extension 2 - 22nd October Mathematics Extension 1 - 24th October Chemistry - 30th October Physics - 1st November
  2. Frostkruncher

    Hey dude! do you remember me? how did you go in 2u HSC?

    Hey dude! do you remember me? how did you go in 2u HSC?
  3. Frostkruncher

    Q16

    Since the x values of the intercepts is symmetrical AND y=x^2 is an even function hence the y-value is the same therefore discrim=0 y^2 + y(1-2c) + (c^2 - R^2) = 0 (1-2c)^2 - 4(1)(c^2 - r^2) = 0 1 - 4c + 4c^2 - 4c^2 + 4r^2 = 0 1 - 4c + 4r^2 1+4r^2 = 4c
  4. Frostkruncher

    Q16

    Here is my solution to cii (differs from EVERYONE i've seen so far) from the quadratic: y^2 + y(1-2c) + (c^2 - R^2) = 0 The intersection between the circle and parabola is always positive (y-value) hence (root1) + (root2) > 0 root1 + root2 = -b/a = (2c-1) therefore 2c-1>0 2c > 1 c > 1/2
  5. Frostkruncher

    Roll Call: Class of 2013

    English Advanced Mathematics Extension 1 Mathematics Extension 2 Chemistry Physics Biology (Intending to drop sometime throughout the year) Aim: ALL ROUNDERS
  6. Frostkruncher

    2012 CSSA Maths 2U

    The answer is 21, I misread the question and found number of terms instead of sum and got 241.
  7. Frostkruncher

    2012 CSSA Maths 2U

    99/100 got the easy garden rows multiple choice question wrong ><
  8. Frostkruncher

    2012 CSSA Maths 2U

    no, i remember it just asked, not specifying anything, I just labelled it 2dp. but YOU are more correct than me for leaving it in exact form.
  9. Frostkruncher

    2012 CSSA Maths 2U

    increasing, at a rate of 0.91 (2.dp)
  10. Frostkruncher

    2012 CSSA Maths 2U

    our Catholic paper did not have a discriminant at ALL, and it was unedited
  11. Frostkruncher

    2012 CSSA Maths 2U

    are you 100% sure the answer is v=0?, or did I have to estimate it?
  12. Frostkruncher

    2012 CSSA Maths 2U

    What were the solutions for the Q16 a velocity/time graph?
  13. Frostkruncher

    A particle P is moving along the x-axis. Its position at time t seconds is given by:

    Re: A particle P is moving along the x-axis. Its position at time t seconds is given ok, ill explain this question to you 5)Calculate the total distance travelled by the particle in the first 'pi' seconds. Now, it means distance travelled, automatically know you have to refer to the integral...
  14. Frostkruncher

    Share your personalised HSC timetable!

    Mathematics (Advanced) - 22/10/12 9:25AM
  15. Frostkruncher

    Length of Arc

    hahaha, Maths In Focus questions Q9. you construct a straight line from centre to chord, making a right angle triangle. now, you need radius, which is a length in this right angle triangle. (pi/6)/2 = pi/12 (new line constructed halves) sin(pi/12) = 12.5/x x = 12.5/sin(pi/12) now L = theta*r...
  16. Frostkruncher

    Need help trigonometric equations

    isnt it -3pi/4?
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