If `A=[[1,0,1],[0,1,2],[0,0,4]]` then show that |3A|=27|A|

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

If A=[[0,0,1],[0,1,0],[1,0,0]] , show that A^(-1)=A

If A=[[1,0,0],[0,1,0],[0,0,1]] then value of |A+A'| is 1)2 2)8 3)4 4)0

If A=[[1,0],[0,1]],B=[[1,0],[0,-1]] and C=[[0,1],[1,0]] then show that A^(2)=B^(2)=C^(2)

If A=[[1,2,3],[0,1,0],[1,1,0]] and B=[[-1,1,0],[0,-1,1],[2,3,4]] show that AB!=BA

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

If A=[[2,3,4],[1,2,3],[-1,1,2]], B=[[1,3,0],[-1,2,1],[0,0,2]] , find AB and BA and show that AB!=BA

If A=[[0,0,1],[0,1,0],[1,0,0]],B=[[0,5,7],[0,0,6],[0,0,0]] and C=[[-1,3,5],[1,-3,-5],[-1,3,5]] , show that A^2=I

If A=[(3,-3,4),(2,-3,4),(0,-1,1)]2-3 41 then show that A^-1=A^1.

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)