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Least squares and matrices

  1. Dec 9, 2009 #1
    I think that this is best suited here as it is linear algebra specific... sorry if I'm wrong.

    Please look at:

    I can do parts a,b and c. But I can't do part d.

    I've been trying to turn it into n independent least squares equations. Let me know if this is not the way to go or you have other suggestions....

    Many thanks,

  2. jcsd
  3. Dec 10, 2009 #2
    I may have misunderstood your notation, but I don't think that your part d is true. You may be able to convince yourself of that by considering a matrix A = diag(1, 0.1, 0.01).
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