Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{41 & -20 \\ -20 & -8} \\
\\
\text{Matrix } B : &\matrix{-47 & -12 & 17 \\ -12 & 43 & 32 \\ 17 & 32 & -17} \\
\\
\text{Matrix } C : &\matrix{-21 & 31 & -36 \\ 31 & 1 & -40 \\ -36 & -40 & 0}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{41 & -20 \\ -20 & -8} \\
\\
\text{Matrix } B : &\matrix{-47 & -12 & 17 \\ -12 & 43 & 32 \\ 17 & 32 & -17} \\
\\
\text{Matrix } C : &\matrix{-21 & 31 & -36 \\ 31 & 1 & -40 \\ -36 & -40 & 0}
\end{aligned}\]
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