Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{17 & -38 \\ -19 & -28} \\
\\
\text{Matrix } B : &\matrix{10 & 21 & 42 \\ 21 & -22 & 13 \\ 42 & 13 & -24} \\
\\
\text{Matrix } C : &\matrix{-3 & -18 & -36 \\ -18 & -25 & 40 \\ -36 & 40 & 38}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{17 & -38 \\ -19 & -28} \\
\\
\text{Matrix } B : &\matrix{10 & 21 & 42 \\ 21 & -22 & 13 \\ 42 & 13 & -24} \\
\\
\text{Matrix } C : &\matrix{-3 & -18 & -36 \\ -18 & -25 & 40 \\ -36 & 40 & 38}
\end{aligned}\]
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