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Math Help - Norms.

  1. #1
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    Norms.

    let u = [1,2,-1,-2], v=[-2,0,4,3], w=[1,6,1,-3]

    calculate:

    1. ||u+v||

    2. ||u|| + ||v||
    Last edited by mr fantastic; January 8th 2011 at 08:03 PM. Reason: Added the correct notation, re-titled.
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  2. #2
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    First add the two vectors and then take the norm.
    Last edited by mr fantastic; January 8th 2011 at 08:03 PM.
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  3. #3
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    if I add, I get [-1, 2, 3, 1] But how do I take a norm?
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  4. #4
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    It depends on which norm you are looking for but I would assume \sqrt{(-1)^2+2^2+3^3+1^2}=\sqrt{1+4+9+1}=\sqrt{15}
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  5. #5
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    then for the second question, the ans would then be sqrt. 10 + sqrt. 29 right?
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  6. #6
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    yup
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  7. #7
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    thanks a lot!
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