0 votes 0 votes Consider a $3\times 3$ matrix $A$ whose $(i,j)$-th element, $a_{i,j} = \left ( i- j \right )^{3}$. Then the matrix $A$ will be symmetric skew-symmetric unitary null new gate2022-ee + – Arjun asked Feb 15, 2022 • edited Feb 18, 2022 by soujanyareddy13 Arjun 15.9k points answer comment Share See all 0 reply Please log in or register to add a comment.