Given the quadratic form
$f(x)=x^TK(x)x $, what is its derivative ? Thanks in advance.
Edit : using Golden_Ratio suggestion I get :
$ f’(x) = (K(x)+K^T(x))x+2K’(x)x^TK(x)$
. Is it correct?
2026-03-30 00:20:15.1774830015
What is the derivative of this quadratic form?
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