1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    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

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    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?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook