I have a quick question. Say we have the following matrices,(adsbygoogle = window.adsbygoogle || []).push({});

[tex] A = \begin{pmatrix} a \\ b \end{pmatrix} [/tex]

[tex] A^\dagger = \begin{pmatrix} a & b \end{pmatrix} [/tex]

[tex] B = \begin{pmatrix} \alpha & \beta \\ \gamma & \delta \end{pmatrix} [/tex]

where the entries can be complex.

Now is the following expression correct?

[tex] \frac{\partial}{\partial A} (A^\dagger B A) = B A + B^\dagger A ?[/tex]

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# Quick question on matrix calculus

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