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AQA A2 Mathematics MPC4 Core 4 - 9th June 2015 [Discussion & unofficial markscheme] Watch

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    (Original post by CD223)
    Cool! Glad it's correct. Do my workings make sense?


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    yep perfect!

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    (Original post by the_googly)
    yep perfect!

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    Aw good! Is revision going okay? How many papers have you done?


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    (Original post by CD223)
    Aw good! Is revision going okay? How many papers have you done?


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    Need 183 more UMS for 480 so I think I'll get that from just C3 and S1 hehe
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    (Original post by Stepidermis)
    Need 183 more UMS for 480 so I think I'll get that from just C3 and S1 hehe
    How odd. I also need 183. What were your module scores last year?


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    (Original post by CD223)
    How odd. I also need 183. What were your module scores last year?


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    will start papers on weekend. nearly finished reviain

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    nearly finished revision. bit late but oh well!

    question 3b anyone

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    (Original post by the_googly)
    nearly finished revision. bit late but oh well!

    question 3b anyone

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    Dot product of the lines PQ and RQ?
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    (Original post by HennersPD)
    Dot product of the lines PQ and RQ?
    why?

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    (Original post by the_googly)
    why?

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    As im thinking the 3 points form a triangle? I could be wrong!
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    (Original post by the_googly)
    why?

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    (Original post by HennersPD)
    Dot product of the lines PQ and RQ?
    Wouldn't you dot product:

    \vec{RQ} \bullet \vec{RS} = 0

    ? As QRS is a right angle.


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    (Original post by CD223)
    Wouldn't you dot product:

    \vec{RQ} \bullet \vec{RS} = 0

    ? As QRS is a right angle.


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    is dot product the same as scaler product

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    (Original post by the_googly)
    is dot product the same as scaler product

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    Yup


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    (Original post by CD223)
    Wouldn't you dot product:

    \vec{RQ} \bullet \vec{RS} = 0

    ? As QRS is a right angle.


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    if I do dot product then can you explain how will that help? thanks

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    This might sound silly, but since I've started writing with a fine tip pen I've made so many less silly mistakes from things like not reading my writing properly,I'd recommend it if anyone does the same as me!
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    (Original post by CD223)
    How odd. I also need 183. What were your module scores last year?


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    97 100 100 c1c2d1
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    (Original post by the_googly)
    if I do dot product then can you explain how will that help? thanks

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    Ever so sorry, I thought you needed help with 3c and not 3b. Here's my method for both parts.

    Name:  ImageUploadedByStudent Room1432588039.309833.jpg
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Size:  183.7 KB

    Is this correct?


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    (Original post by Stepidermis)
    97 100 100 c1c2d1
    How freaky. I got 97 100 100 C1, C2, M1.


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    (Original post by CD223)
    Ever so sorry, I thought you needed help with 3c and not 3b. Here's my method for both parts.

    Name:  ImageUploadedByStudent Room1432588039.309833.jpg
Views: 209
Size:  183.7 KB

    Is this correct?


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    Don't doubt yourself so much, you know it's correct


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    (Original post by Stepidermis)
    97 100 100 c1c2d1
    100 D1, think I need to catch up on some graph theory!


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    (Original post by jjsnyder)
    Don't doubt yourself so much, you know it's correct


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    Lol I make so many silly mistakes I always doubt myself


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