Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{8 & -25 \\ -25 & -20} \\
\\
\text{Matrix } B : &\matrix{-4 & -7 & -44 \\ -39 & 20 & -15 \\ 39 & 42 & -16} \\
\\
\text{Matrix } C : &\matrix{-40 & 31 & -46 \\ 31 & 12 & 34 \\ -46 & 34 & -4}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{8 & -25 \\ -25 & -20} \\
\\
\text{Matrix } B : &\matrix{-4 & -7 & -44 \\ -39 & 20 & -15 \\ 39 & 42 & -16} \\
\\
\text{Matrix } C : &\matrix{-40 & 31 & -46 \\ 31 & 12 & 34 \\ -46 & 34 & -4}
\end{aligned}\]
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