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Old 10-17-2013, 10:22 PM
blunderboy blunderboy is offline
Junior Member
Join Date: Aug 2013
Posts: 5
Question Minimizing Ein by differentiation wr.t w

Can somebody please explain me how we got X' (X' is X Transpose) outside the braces after differentiation. Shouldn't it be X instead of X'.

When I revisited the lecture, I recalled professor saying it is not actually square. It is just transpose multipled by itself. This concept is not clear to me..

Appreciate the help
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