Linear Algebra:
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{38 & -26 \\ -26 & 10} \\
\\
\text{Matrix } B : &\matrix{19 & -23 & 42 \\ -23 & 5 & 8 \\ 42 & 8 & 25} \\
\\
\text{Matrix } C : &\matrix{-31 & 10 & -24 \\ 10 & -43 & 5 \\ -24 & 5 & -42}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{38 & -26 \\ -26 & 10} \\
\\
\text{Matrix } B : &\matrix{19 & -23 & 42 \\ -23 & 5 & 8 \\ 42 & 8 & 25} \\
\\
\text{Matrix } C : &\matrix{-31 & 10 & -24 \\ 10 & -43 & 5 \\ -24 & 5 & -42}
\end{aligned}\]
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