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Math Help - Operation of Vector |u+v|

  1. #1
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    Operation of Vector |u+v|

    Can someone show me an example of how to calculate |u+v|? I know how to do all other operations of vectors. This one seems to get me. The book is not explaining whats going on. Any help?
    Last edited by Binary; April 15th 2012 at 12:16 PM.
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  2. #2
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    Re: Operation of Vector |u+v|

    Quote Originally Posted by Binary View Post
    Can someone show me an example of how to calculate |u+v|? I know how to do all other operations of vectors. This one seems to get me. The book is not explaining whats going on. Any help?
    I am not quite sure what operations you mean.
    But I would use \|u+v\|=\sqrt{(u+v)\cdot(u+v)}=\sqrt{\|u\|^2+2u \cdot v+\|v\|^2}
    Thanks from Binary
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  3. #3
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    Re: Operation of Vector |u+v|

    I figured it out in the book. THank you!
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