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Math Help - Vectors u, v, w, y

  1. #1
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    Vectors u, v, w, y

    I have no i dea where to go with this question. i just started guessing vectors.

    Find vectors u, v, w, y Belong to R2(i) |u|< |v|, |v|> |w|, |w|< |y|, |y| > |u|
    (ii)|u|< |v| < |w| and y.u > y.v, y.v < y.w

    I would appreciate any help thanks
    Last edited by Matt1993; January 23rd 2013 at 03:38 AM.
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  2. #2
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    Re: Vectors u, v, w, y

    assuming you have written this correctly:

    (i) can be re-phrased: |u|,|w| < |y|,|v|

    this is easy, note that if you have a vector of the form (a,0), its norm is |a|.

    (ii) you can use a similar trick for this, as well. note that (a,0).(b,0) = ab.
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