Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{-3 & -1 \\ 28 & -38} \\
\\
\text{Matrix } B : &\matrix{25 & 46 & -9 \\ 46 & 6 & -10 \\ -9 & -10 & -19} \\
\\
\text{Matrix } C : &\matrix{18 & -23 & -21 \\ -38 & 48 & 32 \\ 12 & 43 & 42}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{-3 & -1 \\ 28 & -38} \\
\\
\text{Matrix } B : &\matrix{25 & 46 & -9 \\ 46 & 6 & -10 \\ -9 & -10 & -19} \\
\\
\text{Matrix } C : &\matrix{18 & -23 & -21 \\ -38 & 48 & 32 \\ 12 & 43 & 42}
\end{aligned}\]
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