Determine whether the matrix is symmetric.
-$$\left[ \begin{array} { r r r }
3 & 9 & 4 \
9 & - 5 & - 2 \
4 & - 2 & 0
\end{array} \right]$$
A) Yes
B) $\mathrm { No }$

Question

Determine whether the matrix is symmetric.
-$$\left[ \begin{array} { r r r } 
3 & 9 & 4 \
9 & - 5 & - 2 \
4 & - 2 & 0
\end{array} \right]$$
A) Yes
B) $\mathrm { No }$

Quizplus · Accepted Answer

A matrix is symmetric if it is equal to its transpose. In this case, the given matrix is equal to its transpose because the elements are mirrored across the main diagonal.

Determine Whether the Matrix Is Symmetric [3949−5−24−20]\left[ \begin{array} { r r r } 3 & 9 & 4 \\9 & - 5 & - 2 \\4 & - 2 & 0\end{array} \right]​394​9−5−2​4−20​​

Determine Whether the Matrix Is Symmetric $\left[ \begin{array} { r r r } 3 & 9 & 4 \\9 & - 5 & - 2 \\4 & - 2 & 0\end{array} \right]$