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    hey, i’m currently stuck on this question and wondered if anyone could help. Thanks in advance. Attachment 730438
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    I think...
    a: 2b
    b: -a b
    c: -a-b
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    (Original post by aaminah03)
    I think...
    a: 2b
    b: -a b
    c: -a-b
    b) should be b-a (you missed the addition sign)

    It is important that you understood how he got these answers. Do you? Or do you need an explanation?
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    (Original post by Y11_Maths)
    b) should be b-a (you missed the addition sign)

    It is important that you understood how he got these answers. Do you? Or do you need an explanation?
    Thanks for the help. Could I have an explanation please?
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    (Original post by Y11_Maths)
    b) should be b-a (you missed the addition sign)

    It is important that you understood how he got these answers. Do you? Or do you need an explanation?
    Sorry, yh I missed the addition sign.
    I don’t think u need an explanation as they are only worth 1 mark
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    (Original post by aaminah03)
    I think...
    a: 2b
    b: -a b
    c: -a-b
    Thank you
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    (Original post by Ns8899)
    Thank you
    No problem 👍🏼
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    (Original post by Ns8899)
    Thanks for the help. Could I have an explanation please?
    For the first question it want the vector of the straight line from D to B. This will be equal to 2 lots of b (2b) since half of the line is b.

    Question 2 to go from A to B, start at point A, you have to go opposite the vector of a so this will be -a then you have to add the vector of b to get to your finish point B. So this will be -a+b or b-a.

    Question 3, since you know that the vector DO is b, starting from point A you need to go -a to get to the centre then -b to get to your finish point, hence -a-b.
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    (Original post by aaminah03)
    Sorry, yh I missed the addition sign.
    I don’t think u need an explanation as they are only worth 1 mark
    An explanation of how it’s done so he understands it for future vector questions
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    (Original post by Y11_Maths)
    An explanation of how it’s done so he understands it for future vector questions
    Ok 🙂👍🏼
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    (Original post by Y11_Maths)
    For the first question it want the vector of the straight line from D to B. This will be equal to 2 lots of b (2b) since half of the line is b.

    Question 2 to go from A to B, start at point A, you have to go opposite the vector of a so this will be -a then you have to add the vector of b to get to your finish point B. So this will be -a+b or b-a.

    Question 3, since you know that the vector DO is b, starting from point A you need to go -a to get to the centre then -b to get to your finish point, hence -a-b.
    Thank you
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