If `A=[[i,0],[0,i]]` then find `A^(2)`

(i) If A= [[2,5],[0,0]] then find A'

1.If A=[[i,0],[0,-i]] then show that A^(2)=-I

If I=[[1,0],[0,1]] , then I^4=

If A=[[i, 0], [0, (i)/(2)]] , then A^(-1)=

A=[[1,2-3,0]] then find A^(2)+3A+5I

If A=[[i,0],[0,i]];i=sqrt(-1), then A^(n) is equal to

If A=[[0,1],[1,0]],B=[[0,-i],[i,0]] and C=[[i,0],[0,-i]] , show that A^2=B^2=-C^2=I_2 and AB=-BA,AC=-CA and BC=-CB .

If A=[[2,0,1],[2,1,3],[1,-1,0]] , then find value of A^(2)-5A+6I

If A=[{:(2,0),(0,2):}] then A^(2) - 3I =……