0 votes 0 votes Shadan Karim asked Jan 4, 2019 Shadan Karim 358 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Magma commented Jan 4, 2019 reply Follow Share I'm not sure but I got D 0 votes 0 votes Magma commented Jan 4, 2019 reply Follow Share Lakshman Patel RJIT bhai how to calculate co-factor here ??? 0 votes 0 votes Please log in or register to add a comment.
1 votes 1 votes Eigen values are 1,2,3. Therefore characteristic equation is (x-1)(x-2)(x-3)=0 By Cayley-Hamilton Theorem, (A-I)(A-2I)(A-3I)=0 A^3 - 6A^2 + 11A = 6I Multiplying by A^-1,we get A^2 - 6A + 11I = 6A^-1 Therefore, A^-1 = (A^2 - 6A + 11I)/6 Hence (c) Meet2698 answered Jan 27, 2019 Meet2698 comment Share Follow See all 0 reply Please log in or register to add a comment.