Linear Algebra
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{-21 & -39 \\ 17 & -9} \\
\\
\text{Matrix } B : &\matrix{23 & 14 & -11 \\ -23 & -34 & 11 \\ 27 & -8 & 18} \\
\\
\text{Matrix } C : &\matrix{36 & 24 & 28 \\ -4 & 6 & -7 \\ 4 & -41 & -11}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{-21 & -39 \\ 17 & -9} \\
\\
\text{Matrix } B : &\matrix{23 & 14 & -11 \\ -23 & -34 & 11 \\ 27 & -8 & 18} \\
\\
\text{Matrix } C : &\matrix{36 & 24 & 28 \\ -4 & 6 & -7 \\ 4 & -41 & -11}
\end{aligned}\]
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