0 votes 0 votes IF A is square matrix of order 'n' and rank(A)=n-2 then Rank(adj(A))=? supraja asked Apr 23, 2015 supraja 2.9k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 5 votes 5 votes rank of the adjoint matrix is : n if r(A)=n 1 if r(A)=n-1 0 if r(A)<n-1 Digvijay Pandey answered Apr 23, 2015 selected Dec 22, 2015 by Pooja Palod Digvijay Pandey comment Share Follow See all 3 Comments See all 3 3 Comments reply supraja commented Apr 23, 2015 reply Follow Share sir can you give one example of such a matrix 0 votes 0 votes Digvijay Pandey commented Apr 23, 2015 reply Follow Share take identity matrix of 4*4.. identity matrix is just for simplicity.. make sure last two rows are zero (we need (n-2) rank matrix).. 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 now find adjoint .. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 votes 0 votes mcjoshi commented Sep 4, 2016 reply Follow Share Thanks. Hope this is correct ! 0 votes 0 votes Please log in or register to add a comment.