can any one solve this mystry?

Discussion in 'Math' started by salman khan, Apr 13, 2007.

  1. salman khan

    Thread Starter New Member

    Apr 13, 2007
    1
    0
    1: how many entries of A can be chosen independently, if A=A transpose is a 5*5 matrix?:(


    2: how do L and D (still 5*5)give the same number of choices?:rolleyes:


    3: how many entries can be chosen if A is skew-symmetric?:eek:
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,137
    1,786
    Why do you think these questions are mysterious? Do you have an approach for finding the solution? Tell us what you think.
     
  3. jrboog

    New Member

    Apr 16, 2007
    4
    0
    Where did these come from ?

    Sounds like a Critical Thinking question from Algebra 2 days, or possibly a Differential Equations question.

    I think in light of my finals coming up... i need to do more homework and less puzzles... im trying to put those questions out of my mind.... lol.

    Take care.
     
  4. cumesoftware

    Senior Member

    Apr 27, 2007
    1,330
    10
    Simple: 15 entries.
     
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