Question

The matrix $A=\left[\begin{array}{cc}0& 1\\ 1& 0\end{array}\right]$ is a

• A. unit matrix
• B. diagonal matrix
• C. symmetric matrix
• D. skew-symmetric matrix

Answer 1

Answer: (C)

$A^{\prime }=\left[\begin{array}{cc}0& 1\\ 1& 0\end{array}\right]=A$
Hence, $A$ is a symmetric matrix.