Linear Algebra:
Special Matrix Types
Which of the following matrices is symmetric?
\[\begin{aligned}
\text{Matrix } A : &\matrix{-15 & -7 \\ -7 & 44} \\
\\
\text{Matrix } B : &\matrix{11 & -17 & 34 \\ -17 & 37 & -20 \\ 34 & -20 & -15} \\
\\
\text{Matrix } C : &\matrix{21 & -12 & -8 \\ 20 & -8 & -46 \\ 21 & -37 & -5}
\end{aligned}\]
\[\begin{aligned}
\text{Matrix } A : &\matrix{-15 & -7 \\ -7 & 44} \\
\\
\text{Matrix } B : &\matrix{11 & -17 & 34 \\ -17 & 37 & -20 \\ 34 & -20 & -15} \\
\\
\text{Matrix } C : &\matrix{21 & -12 & -8 \\ 20 & -8 & -46 \\ 21 & -37 & -5}
\end{aligned}\]
Unlock full access
