If `A=[[3,0,0],[0,3,0],[0,0,3]]` ,then find A'

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||adjA|=

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

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={:[(3,2,7),(1,1,4),(-1,-1,0)]:},B={:[(1,0,3),(2,1,0),(0,-1,-3)]:}andC{:[(1,0,0),(0,1,0),(0,0,1)]:} , then find 2A+3B-7C.

Let a be a 3xx3 matric such that [(1,2,3),(0,2,3),(0,1,1)]=[(0,0,1),(1,0,0),(0,1,0)] , then find A^(-1) .

If A = [{:(3, 0), (0, 3):}] , then find A^(n), (where n in N)