Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If A is the diagonal matrix (order `3xx3`) diagonal `(d_1, d_2, d_3)`, then `A^n n in` N is - Sarthaks eConnect

If A is the diagonal matrix (order `3xx3`) diagonal `(d_1, d_2, d_3)`, then `A^n n in` N is:

diag `(d_1, d_2, d_3)`

diag `(nd_1, nd_2, nd_3)`

diag `(d_1^n, d_2^n, d_3^n)`

none of these