Hello, I would like to know the answer of this multiple choice problem and I want to know the meaning of the two 2s next to the norm sign. Thanks in advance,
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represents the p-norm. In your case, this the two 2s represents the Euclidean norm, squared. Reference: regression - What is the meaning of super script 2 subscript 2 within the context of norms? - Cross Validated
Where did you get this problem if you do not even know the notation? I cannot imagine a text book using the notation without first having defined it!
Originally Posted by HallsofIvy Where did you get this problem if you do not even know the notation? I cannot imagine a text book using the notation without first having defined it! No, it isn't from a text book ... I was just trying to solve some problems from an online website "brilliant"