
#1
Apr2812, 03:05 PM

P: 44

‖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
Apr3012, 02:25 AM

Mentor
P: 4,499

I don't really understand the question. A(x+αz)b is a vector in R^{m}, so you just calculate its norm



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