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    Exam thoughts??

    Found it easier than last years? :l Hoping for a 87 raw
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    Mathematics Extension 2 - 2016 Post-HSC Exam Thoughts

    Answer to q 10? 12 d ii), 13 c ii)?
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    Raw marks in hsc

    oh thanks so much. is the range really that big between a 93 and 97 external mark?? 79 raw = 93 and 90 raw = 97??? wtf ALSO: now that im looking at this database spreadsheet thingy how does it work for MX1? because isnt the unweighted raw mark meant to be out of 70 not 100?
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    Raw marks in hsc

    I know this kinda varies from year to year due to test difficulty, but approximately what marks am i looking at in the actual HSC exam solely to warrant me a 90 external mark in 4u? Also what would the approximate mark be if i was looking at a 93-94 external mark and also what mark for a 96-97...
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    Year 11 moving to 12 considering 4U Maths

    In regards to taking 4U maths, if you really consider yourself an average mathematician and looking towards a 90+ for MX2, you have to bear in mind that taking this course really requires dedication and a LOT of work; what i mean by a lot of work im talking about generally a couple hours...
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon My issue is why was the answer the sum of Im(z1) and not the sum of Im(z2). They provide different answers so what was the reasoning in choosing one over the other
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon Complex number question I) If w is a non real seventh root of smallest positive argument, show that w = cis 2pi/7 II) Show that 1 + w^2 + w^3 + w^3 + w^4+ w^5 + w^6 = 0 III) Show that w + w^-1 = 2 cos (2pi/7) , hence, find the exact value of cos...
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon A mass of 1kg is fastened by a string of length 1m to a point 0.5m above a smooth horizontal table and is describing a circl o nthe table with uniform angular speed of 1 revolution in 2 seconds. How do i find the force exerted on the table? Answer is (g - 0.5pi^2)N
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon The area between y = 2x +1 and y = (x+1)^2 is rotated about y = -1 with x=0 as the boundary axis. Find the volume
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    2016 Budget

    Anyone have any views and opinions on this years budget? Also does anyone have any good essay questions in relation to the budget? Its coming up in our trials so anyone help is welcome
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    Balmers Equation

    For the describe how Bohr's postulates led to teh development of a mathematical model to account for the existence of the hydrogen spectrum dotpoint, are we expected to derive Balmers equation? whats required
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon oh i see... T_T
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon a projectile is fired vertically upwards from the earths surface with velocity U m/s. The retardation due to gravity is given by the law k/x^2 where x is the distance of the projectile from the centre of the earth, and k is a constant. The acceleration due to gravity on...
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon A particle is thrown vertically upwards where the air resistance is given by R = 0.01mv^2. If the velocity of projection is 60m/s find the time to reach the highest point. Answer is 3.43 s
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    Best book for mechanics

    Title says it all. What book should i use to start learning mechanics. Brand new to the topic, which textbook should i start with
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon wait how did you end up with this integral? the area i chose was just between 0 and 1/root 2, why does it include between 1/root 2 and 1?
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon uhh the provided answer is 1/2 (pi(pi root 2 -1))
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    HSC 2016 MX2 Marathon (archive)

    Re: HSC 2016 4U Marathon the area in the first quadrant bounded by the curves y = sin x , y = cos x and the y axis, is rotated about the y axis. FInd the volume of the solid formed
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    Cambridge HSC MX1 Textbook Marathon/Q&A

    Re: Year 12 Mathematics 3 Unit Cambridge Question & Answer Thread oh ok thanks for clarifying, so when it states that the displacement from the mean position is 2, i CAN take it as x = 2 or x = -2? considering above and below respecitvely?
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    Cambridge HSC MX1 Textbook Marathon/Q&A

    Re: Year 12 Mathematics 3 Unit Cambridge Question & Answer Thread question, why is x double dot equal to -4 and not just 4? because isnt the acceleration just 4m/s^2. the problem i had with that was then since x double dot = - n^2 x is the x (the distance for the mean position) can it be...
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