If `A=[[3,0,0],[0,3,0],[0,0,3]]` then find `A^(4)`

If A= [[3, 0, 0], [0 ,3, 0], [0 ,0, 3]] then find 4 A .

If A[[3,0,0] , [0,3,0] , [0,0,3]] then A^4=[[3^k,0,0] , [0,3^k,0] , [0,0,3^k]] then k=

If A=[[3, 0, 0], [0, 3, 0], [0, 0, 3]] , then |A||adjA|=

If A=|[1,0,1],[0,1,2],[0,0,4]| then |3A|

If A=([3,0,0],[4,5,0],[2,1,6]) then A^(-1)=

If A = [(3,0,0),(0,3,0),(0,0,3)] , then |A||adj A| =...

If [[1,0,0],[0,2,0],[3,0,-1]] and A^20 +alphaA^19+betaA=[[1,0,0],[0,4,0],[0,0,1]] Find the value of (alpha+beta)

If A=[(2,0,0),(0,2,0),(0,0,2)] , then find the value of A^(3) .

If A=[[3,3,5],[4,4,4]] and B=[[1,3],[-1,2],[0,0]] then find AB