Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If D= diag `(d_1, d_2 ......., d_n)` where `d_i !=` 0, i=1, 2 .............., n then `D^-1` is equal to - Sarthaks eConnect

If D= diag `(d_1, d_2 ......., d_n)` where `d_i !=` 0, i=1, 2 .............., n then `D^-1` is equal to

diag `(d_1^-1, d_2^-1, ........., d_n^-1)`

AdjD