If `A=[1 2 4 2]` , then show that `|2A|" "=" "4|A|`

If A=[1242], then show that |2A|=4|A|

If A=[[1,24,2]], then show that |2A|=4|A|

" 2.If "A=|[1,2],[4,2]|," then show that "|2A|=2|A|

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

If A=[[5,-4],[2,-1]] then show that |A| = |A^(T)|

If A=[[2,4],[-5,-1]] show that: |3A|=9|A|

If A=[{:(2,1,1),(1,2,1),(1,1,2):}] , then show that : |4A|=64|A| .

If A=[[ 1 ,4 , 7 ] , [2 , 5 , 8 ]] and B=[[-3, 4 , 0 ],[ 4 ,-2 , -1 ]] then show that ( A + B )^T = A^T + B^T

If A=[2-3-5-1 4 5 1-3-4] and B=[2-2-4-1 3 4 1-2-3] , show that A B=A and B A=B .

If A=[4-1-430-43-1-3], show that A^(2)=I_(3)