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Derivative and Differential of Trace(AX)

18/09/2011

I already know

\mathrm{d}\mathrm{tr}(Ax)=\mathrm{tr}(A\mathrm{d}X)

and

\frac{\partial\mathrm{tr}(AX)}{\partial X}=A^T

But I’m not sure about the proof. Now I give the proof. See here trace(Ax)

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