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How do you evaluate a norm like this?

  1. Apr 28, 2012 #1
    ‖A(x+αz)-b‖_2^2

    where A is an mxn matrix, x and z are vectors in R^n, b is a vector in R^m, and α is a scalar.
     
  2. jcsd
  3. Apr 30, 2012 #2

    Office_Shredder

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    I don't really understand the question. A(x+αz)-b is a vector in Rm, so you just calculate its norm
     
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