0 votes 0 votes For given Matrix: [ 1 2 3 1 5 1 3 1 1 ] Why does the sum of the eigen values of above matrix is the sum of diagonal elements of that matrix? Linear Algebra eigen-value matrix engineering-mathematics + – ryandany07 asked Sep 4, 2022 ryandany07 335 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Kabir5454 commented Sep 4, 2022 reply Follow Share https://math.stackexchange.com/questions/546155/proof-that-the-trace-of-a-matrix-is-the-sum-of-its-eigenvalues 0 votes 0 votes shishir__roy commented Sep 4, 2022 reply Follow Share https://www.adelaide.edu.au/mathslearning/ua/media/120/evalue-magic-tricks-handout.pdf 0 votes 0 votes Please log in or register to add a comment.