Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If `A=[[3,-4],[1,-1]],`then `A^n` (Where `n in N`) is - Sarthaks eConnect

If `A=[[3,-4],[1,-1]],`then `A^n` (Where `n in N`) is

`[[3n,-4n],[n,-n]]`

`[[n+2,5-n],[n,-n]]`

`[[3^n,(-4)^n],[1,(-1)^n]]`

none of these