Which of the following matrices is a symmetric matrix?
1
\(\left[\begin{array}{ccc} 2 & -3 & 4 \\ 3 & -3 & 4 \\ 4 & -4 & 4 \end{array}\right]\)
2
\(\left[\begin{array}{ccc} 2 & 3 & 4 \\ 3 & -3 & 4 \\ 4 & 4 & 4 \end{array}\right]\)
3
\(\left[\begin{array}{ccc} 2 & 3 & 4 \\ -2 & -3 & -4 \\ 2 & 3 & 4 \end{array}\right]\)
4
\(\left[\begin{array}{ccc} 2 & 3 & 4 \\ 3 & 3 & -4 \\ 4 & 4 & 4 \end{array}\right]\)
5
Question Not Attempted