Answer
$0$
Work Step by Step
$A=\left[ \begin{matrix}
1 & 4 & 3 & 2 \\
4 & 0 & 6 & 1 \\
3 & 6 & 2 & 1 \\
2 & 1 & 1 & -3 \\
\end{matrix}
\right] $
To find the trace of a matrix calculate the sum of the main diagonal
entries.
$Tr(A)=1+0+2+(-3)=0$
