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Finding orthonormal basis for the intersection of the subspaces

  1. Dec 7, 2011 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    can someone help me to solve this problem?

    3. The attempt at a solution
    I couldn't even approach
  2. jcsd
  3. Dec 7, 2011 #2

    Char. Limit

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    Gold Member

    Well, you know what a basis is. Because you're looking for one for the intersection of the two subspaces, you know that whatever basis you find has to fit BOTH. So how would you find an orthonormal basis for one of them?
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