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Homework Help: Vectors basis

  1. Sep 26, 2005 #1
    I am not sure if a vector e=(0,1) is a basis in R^2.

    Can it give an expantion to vector u:

    u=a(0,1)

    u1=0
    u2=a ?
     
  2. jcsd
  3. Sep 27, 2005 #2
    I got it. It a was a stupid question.
     
  4. Sep 27, 2005 #3

    HallsofIvy

    User Avatar
    Science Advisor

    R2 is "2 dimensional" and so requires 2 vectors for a basis.
     
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