Linear Algebra:
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{11 & -15 \\ -15 & 48} \\
\\
\text{Matrix } B : &\matrix{-31 & -43 & 33 \\ -43 & 43 & -16 \\ 33 & -16 & -50} \\
\\
\text{Matrix } C : &\matrix{36 & 19 & -32 \\ 19 & 19 & -47 \\ -32 & -47 & -9}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{11 & -15 \\ -15 & 48} \\
\\
\text{Matrix } B : &\matrix{-31 & -43 & 33 \\ -43 & 43 & -16 \\ 33 & -16 & -50} \\
\\
\text{Matrix } C : &\matrix{36 & 19 & -32 \\ 19 & 19 & -47 \\ -32 & -47 & -9}
\end{aligned}\]
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