Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{31 & -23 \\ 18 & -27} \\
\\
\text{Matrix } B : &\matrix{25 & -13 & -8 \\ -13 & 7 & -49 \\ -8 & -49 & 16} \\
\\
\text{Matrix } C : &\matrix{5 & 25 & -2 \\ 25 & -18 & -28 \\ -2 & -28 & -34}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{31 & -23 \\ 18 & -27} \\
\\
\text{Matrix } B : &\matrix{25 & -13 & -8 \\ -13 & 7 & -49 \\ -8 & -49 & 16} \\
\\
\text{Matrix } C : &\matrix{5 & 25 & -2 \\ 25 & -18 & -28 \\ -2 & -28 & -34}
\end{aligned}\]
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