$x, a$ in $\mathbb R^n$, $A$ in $\mathbb R^{n\times n}$. I'm trying to compute $d(x^T A x)/dx$.
I got, in the last step: (x^T A)^T + Ax. Somebody said that this should equal 2Ax. Why is that?
[Resolved.]
2026-03-27 05:37:52.1774589872
Evaluate transpose: What is (X^T A)^T
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