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    Urgent: Atar cutoff and bonus points question

    Just a quick question, if i got an atar 95, obtain 5 bonus points from HSC plus and the cutoff remains the same 97, will I get in for sure?
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    Engineering- double degrees or master? help

    I want to study electrical engineering as my main in unsw, but want something else to complement it I am really interested in commerce and want it combined, but i didn't study economics in HSC, so not sure if i can handle it, also heard most people dropped to only a single degree at year 2...
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    Letter to Alice help! Module A

    Just realized half of my essay is about the similarities... and last year questions is about the accentuate the distinctive context... I only have marriage and education as differences, is there any more???
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    Hardest 3&4 unit paper in which year?

    just want to try them out! haha
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    Arrangements help

    Recently doing all sorts of 3and 4 unit papers, but only getting around 50 % on the arrangements and probability part. For example In how many ways can 4 men and 4 women be arranged around a circular table if all the men are in pairs separated by two pairs of women. How do you start this...
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    trig question

    cos5x=cos2x (2marks) find the general solution for x? don't really get it, can anyone explain? thx
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    Validity confusion

    I am really confused about validity, for example use pendulum to measure gravity. I know that reliability is how consistent the results are, and accuracy relates to the equipments used and how close it is to the theoretical result, but how do I assess validity? Please explain
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    inverse trig help

    differentiate cos^-1(sinx) I got -cos/ square root (cos^2(x)) so cos cancel out and is -1. But the answer is +- 1. I don't really understand it... can any one explain? Thanks
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    Do u need to know these trig identities

    Just wondering, for 4 unit, do u need to remember Product-to-Sum Formulas and Sum-to-Product Formulas in trig identities. Thanks
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    Binomial confusion... help

    ok, so this is the question: to find the independent term of x where (x+(1/x))^40)(x-(1/x))^40) when I didn't factorise this and working with the first bracket and then times the second bracket , it's this 40C20 * 40C20 yet if i factorise it into (x^2- x^(-2)) the answer is 40C20. Wth... can...
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    Binomial coefficient help

    Can any one explain this to me, i am lost
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    parametrics help

    Show that the locus of M is a parabola and find its vertex and focal length, where M is (ap, a+ap^2) How do you the focal length and vertex after I worked out to be this: x^2=ay-a^2? Can anyone help me out... thx
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    number arrangements help

    number less than 4000 using 1,3,5,8,9 how many of them are divisible by 3 I did this question in a long way, using that the sum of digit equals is divisible by 3 like 1359, there is 2*3! number which is divisible by 3. can someone show me a short method for this? Thanks
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    Graph help

    Can anyone show me how to graph y=(2x^3)/(x^2-4) , i got 3 turning points 0, +- root 12, but the answer is +-2.16. Ty
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    Polynomiall help

    I was doing excel ext2 and there was a step that i don't really get: P(x)= (x-2)(x-3)Q(x)+5x-6 then P(x) is divided by (x-2)(x-3) then remainder is 5x-6 how does that work please explain. Thanks
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    Member force help!

    I need some serious help with finding the forces in different members. Can someone show me how to find the force in member a and b please in mathematical and graphical.Really appreciated.
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    Complex no help

    ok, so i was revising complex no. and one question asks to find the locus of w= z-2i/1-z absolute value (z) =2 and the answer is a circle with radius: root 20/3 and center (-4/3, 2/3) I don't get why my working doesn't work: [] = absolute value z-zw = z-2i z(1+w)=w+2i z= w+2i/1+w 2=...
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    log help!

    Hey, i was doing log question and I cannot get the meaning of e^x The question is to differentiate log10x and the answer is (log10e)/x can some one explain why the e come out from no where. Thanks heaps
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    Looking for English Advance Tutor in Hills district!

    I will start year 12 after the holiday and looking for an English Advance tutor. Tutoring can take place anywhere near Beaumont Hills. I know that I will be doing "The crucible' for belonging. Contact me with price at: snweicn@hotmail.com Thanks
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