Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{-18 & -21 \\ 13 & 14} \\
\\
\text{Matrix } B : &\matrix{1 & -2 & 49 \\ -46 & 12 & 42 \\ 24 & -23 & -28} \\
\\
\text{Matrix } C : &\matrix{-9 & 28 & 46 \\ -32 & 19 & -11 \\ -15 & -47 & 13}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{-18 & -21 \\ 13 & 14} \\
\\
\text{Matrix } B : &\matrix{1 & -2 & 49 \\ -46 & 12 & 42 \\ 24 & -23 & -28} \\
\\
\text{Matrix } C : &\matrix{-9 & 28 & 46 \\ -32 & 19 & -11 \\ -15 & -47 & 13}
\end{aligned}\]
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