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Edexcel A2 C4 Mathematics June 2016 - Official Thread Watch

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    (Original post by GeologyMaths)
    Thanks for the explanation but where is t in the question?
    Sorry, I didn't look at your question properly, I used the wrong variables, let me fix it.
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    (Original post by Zacken)
    Sorry, I didn't look at your question properly, I used the wrong variables, let me fix it.
    Nice thanks
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    (Original post by GeologyMaths)
    Nice thanks
    Okay, should be fixed.
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    (Original post by GeologyMaths)
    Someone help with part aAttachment 512309

    I understand the whole pi y^2 dx thing, but cannot integrate it into a parametric equation question :/...

    Which paper is that Q from, out of interest?
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    (Original post by Dohaeris)
    Which paper is that Q from, out of interest?
    https://a086a5a2f39bda93734c56a63fab...%20Edexcel.pdf
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    How did you know?
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    (Original post by GeologyMaths)
    How did you know?
    Googled it; did my edited explanation help?
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    (Original post by Zacken)
    Googled it; did my edited explanation help?
    Yeah thanks v much
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    (Original post by GeologyMaths)
    Yeah thanks v much
    Awesome.
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    https://e1934e482e1b0d2c8580c3a986eb...EZ3UTQ/CH4.pdf

    For question 11, couldn't x coordinate also be 3pi/2 how are you supposed to figure out which specific value it is..

    thnx
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    (Original post by Mihael_Keehl)
    https://e1934e482e1b0d2c8580c3a986eb...EZ3UTQ/CH4.pdf

    For question 11, couldn't x coordinate also be 3pi/2 how are you supposed to figure out which specific value it is..

    thnx
    From the graph, it's the first time y=0, besides for when t=0.
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    (Original post by Mihael_Keehl)
    https://e1934e482e1b0d2c8580c3a986eb...EZ3UTQ/CH4.pdf

    For question 11, couldn't x coordinate also be 3pi/2 how are you supposed to figure out which specific value it is..

    thnx
    I would say because it is the first intersection after the origin it has to be the smallest positive value of t
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    (Original post by EricPiphany)
    From the graph, it's the first time y=0, besides for when t=0.
    (Original post by Student403)
    I would say because it is the first intersection after the origin it has to be the smallest positive value of t
    lmao ofc omg
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    https://e1934e482e1b0d2c8580c3a986eb...EZ3UTQ/CH4.pdf

    Page 48 Part d

    After finding the t values, I am struggling to know what to do. pls give me a hint?
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    (Original post by Mihael_Keehl)
    https://e1934e482e1b0d2c8580c3a986eb...EZ3UTQ/CH4.pdf

    Page 48 Part d

    After finding the t values, I am struggling to know what to do. pls give me a hint?
    Plug it into your parametric equation and get values for (x, y)
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    (Original post by Zacken)
    Plug it into your parametric equation and get values for (x, y)
    Thank You.
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    Thanks
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    (Original post by Dohaeris)
    Thanks
    (Original post by Zacken)
    Plug it into your parametric equation and get values for (x, y)
    How do you do 8b of that question?
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    I don't suppose you know why that paper is 'withdrawn'? It's not any of the official papers on the edexcel website...
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    (Original post by Dohaeris)
    I don't suppose you know why that paper is 'withdrawn'? It's not any of the official papers on the edexcel website...
    There was some controversy over the 2013 A2 Maths papers. I can't remember exactly what happened, by I think there was a leak or a large shipment of papers were lost. I think it was the latter.
 
 
 
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