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Homework Help: R3, R4, Rn Vector Space

  1. Feb 16, 2010 #1
    1. The problem statement, all variables and given/known data

    Calculate ||1,1,1||in R3
    Calculate ||1,1,1,1|| in R4.
    Calculate ||1,1,....,1|| in Rn.

    2. Relevant equations
    All I have in this problem is that, Where do I start?


    3. The attempt at a solution
     
  2. jcsd
  3. Feb 16, 2010 #2

    LCKurtz

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    What does ||1,1,1|| mean? This isn't a leading question; I want to know what that symbol is supposed to represent.
     
  4. Feb 16, 2010 #3
    I'm guessing || means the magnitude, or the scalar length of the vector.

    [Moderator's note: solution deleted]
     
    Last edited by a moderator: Feb 16, 2010
  5. Feb 16, 2010 #4

    LCKurtz

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    I would guess that too, but I'm trying to get the poster to write it correctly for starters. You wouldn't normally write a vector as 1,1,1.
     
    Last edited: Feb 17, 2010
  6. Feb 16, 2010 #5
    it means the magnitude, i believe.
     
  7. Feb 17, 2010 #6

    Mark44

    Staff: Mentor

    So how do you calculate the magnitude of a vector in R3, R4, Rn?
     
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