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I am a new user of Mathematica (although I am reasonably familiar with MATLAB) and I am trying to differentiate a scalar wrt a vector Mathematica. ie, I want to check if

\begin{equation}

\phi = \textit{x}^{T} \textbf{A} \textit{y} \quad \mbox{where $\textit{x}$, $\textit{y}$ are vectors and $\textbf{A}$ is a symmetric matrix} \\

\frac{\partial{\phi}}{\partial{\textit{x}}} = \textbf{A} \textit{y}\\

\end{equation}

I am kind of lost and would appreciate some help on this.

Thanks

yogesh