2 votes 2 votes Set Theory & Algebra set-theory&algebra discrete-mathematics engineering-mathematics set-theory + – Vicky rix asked Mar 16, 2017 Vicky rix 206 views answer comment Share Follow See 1 comment See all 1 1 comment reply dd commented Mar 17, 2017 reply Follow Share matrix $A^{n}$ is symmetric if $A$ is symmetric for integer n 0 votes 0 votes Please log in or register to add a comment.