Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{7 & -5 \\ -5 & -12} \\
\\
\text{Matrix } B : &\matrix{49 & 18 & -22 \\ 30 & -40 & -47 \\ 36 & 19 & -6} \\
\\
\text{Matrix } C : &\matrix{35 & -31 & 2 \\ -31 & 37 & 18 \\ 2 & 18 & 34}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{7 & -5 \\ -5 & -12} \\
\\
\text{Matrix } B : &\matrix{49 & 18 & -22 \\ 30 & -40 & -47 \\ 36 & 19 & -6} \\
\\
\text{Matrix } C : &\matrix{35 & -31 & 2 \\ -31 & 37 & 18 \\ 2 & 18 & 34}
\end{aligned}\]
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