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Thread: HSC 2017 MX2 Marathon

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    HSC 2017 MX2 Marathon

    Post any questions within the scope and level of Mathematics Extension 2. Once a question is posted, it needs to be answered before the next question is raised.

    This thread is mainly targeting Q1-15 difficulty in the HSC.

    Q16/Q16+ material to be posted here:
    HSC 2017 MX2 Marathon ADVANCED

    Integration Questions:
    HSC 2017 MX2 Integration Marathon

    Really Extra Curricular/Non-Syllabus:
    http://community.boredofstudies.org/...icular-topics/

    I encourage all current HSC students in particular to participate in this marathon.

    Have fun ^_^

    To start off:

    Last edited by dan964; 1 Mar 2017 at 12:26 AM.

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    Re: HSC 2018 4U Marathon

    Quote Originally Posted by si2136 View Post
    Post any questions within the scope and level of Mathematics Extension 2. Once a question is posted, it needs to be answered before the next question is raised.

    This thread is mainly targeting Q1-15 difficulty in the HSC.

    I encourage all current HSC students in particular to participate in this marathon.

    Have fun ^_^

    To start off:

    Thread title currently says 2018 marathon. Did you mean 2017 (typo)?

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    Re: HSC 2018 4U Marathon

    Quote Originally Posted by si2136 View Post

    To start off:


    Should I leave the answer in a simpler form?

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    Re: HSC 2018 4U Marathon

    An alternate method (also a more tedious one, esp at the end):
    2017 HSC

    Maths Ext 2 ~ Maths Ext 1~ Physics ~ Chemistry ~ English Advanced

    >97 pls

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    Re: HSC 2018 4U Marathon

    How do you go next line in latex without it outputting all the
    . I used \\

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    Re: HSC 2018 4U Marathon

    Quote Originally Posted by frog1944 View Post
    How do you go next line in latex without it outputting all the
    . I used \\
    Don't put it on a new line. TeX is single line input.
    If I am a conic section, then my e = ∞

    Just so we don't have this discussion in the future, my definition of the natural numbers includes 0.

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    Re: HSC 2018 4U Marathon

    Quote Originally Posted by InteGrand View Post
    Thread title currently says 2018 marathon. Did you mean 2017 (typo)?
    Well there goes this thread...

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    Re: HSC 2017 4U Marathon

    How are there two thread titles?

    http://prntscr.com/ctafpk

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by si2136 View Post
    How are there two thread titles?

    http://prntscr.com/ctafpk
    Because the original thread was named 2018 and the name got changed but we didn't reply to the new one.

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    Re: HSC 2017 4U Marathon

    Are we allowed to write z = r(cos x + i sin x) to z = rcisx

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by si2136 View Post
    Are we allowed to write z = r(cos x + i sin x) to z = rcisx
    Yes.

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    Re: HSC 2017 4U Marathon

    If z=x+iy
    Express (z+1)/(z-1) in a+ib form.
    2016 Preliminary

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    Atar aim: 97
    Desired Course: Physiotherapy

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by Rathin View Post
    If z=x+iy
    Express (z+1)/(z-1) in a+ib form.


    Ceebs typing the working out... But hint : Don't sub z in straight away.

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by Drsoccerball View Post


    Ceebs typing the working out... But hint : Don't sub z in straight away.
    Why do you recommend to not sub z in straight away. Usually I do.

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by si2136 View Post
    Why do you recommend to not sub z in straight away. Usually I do.
    Probs cause realising the denominator becomes less tedious
    I am rather fond of a sizeable Gluteus Maximus and I am incapable of uttering a falsehood

    Quote Originally Posted by Carrotsticks View Post
    I too enjoy sliding up and down smooth vertical poles and creating lots of tension.

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    Re: HSC 2017 4U Marathon

    This is much easier to do. Try subbing in the terms when you have 3 or more terms gg...
    JackPatel likes this.

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    Re: HSC 2017 4U Marathon




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    Re: HSC 2017 4U Marathon


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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by Rathin View Post
    If z=x+iy
    Express (z+1)/(z-1) in a+ib form.
    (2x-1)+2iy

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by Kingom View Post
    (2x-1)+2iy
    Did you assume |z| = 1 ?

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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by Drsoccerball View Post
    Did you assume |z| = 1 ?
    no i just multiplied by z+1/z+1

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    Re: HSC 2017 4U Marathon










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    Re: HSC 2017 4U Marathon

    Quote Originally Posted by leehuan View Post


    Ill get the ball rolling... THE SOCCERBALL ROLLING!!! YOU GET IT?????! pls save me from finals...
    i)












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    Re: HSC 2017 4U Marathon





    Sorry about the ≤ mistake
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    Re: HSC 2017 4U Marathon



    Last edited by InteGrand; 18 Oct 2016 at 12:37 AM.

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