Linear Algebra:
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{22 & -47 \\ -47 & 7} \\
\\
\text{Matrix } B : &\matrix{38 & 17 & -37 \\ 17 & -47 & -21 \\ -37 & -21 & 4} \\
\\
\text{Matrix } C : &\matrix{-5 & 43 & 5 \\ -50 & -37 & -1 \\ 28 & -19 & 47}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{22 & -47 \\ -47 & 7} \\
\\
\text{Matrix } B : &\matrix{38 & 17 & -37 \\ 17 & -47 & -21 \\ -37 & -21 & 4} \\
\\
\text{Matrix } C : &\matrix{-5 & 43 & 5 \\ -50 & -37 & -1 \\ 28 & -19 & 47}
\end{aligned}\]
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