Prove that `[[1,0,-1],[3,4,5],[0,-6,-7]]^-1=[[1/10,3/10,1/5],[21/20,-7/20,-2/5],[-9/10,3/10,1/5]]`

[[1,0,-13,4,50,-6,-7]]=[[(1)/(10),(3)/(10),(1)/(5)(21)/(20),-(7)/(20),-(2)/(5)-(9)/(10),(3)/(10),(1)/(5)]]

If A=[[1,0,5],[3,2,7],[5,4,8]],B=[[3,1,2],[9,0,-6],[7,4,1]],C=[[2,0,-1],[7,5,6],[1,1,4]] , verify that A+(B+C)=(A+B)+C

5 1/7-{3 3/10-:[2 4/5-7/10]}

If A=[[1,4],[0,5],[6,7]] and B=[[2,3,-1],[1,0,-7]] , verify that (AB)\'=B\'A\'

If A=[[1,4],[0,5],[6,7]] and B=[[2,3,-1],[1,0,-7]] , verify that (AB)\'=B\'A\'

If A=[[3, 5, -1], [2, 0, 4], [1,-3, 0]] , then [[12, 4, -6], [3, 1, 14], [20, -14, -10]] is

If 2[[3,4],[5,x]]+[[1,y],[0,1]]=[[7,0],[10,6]] then find (x-y)

If A=[[3,0],[-3,1],[4,1]],B=[[1,0],[-2,1],[7,2]] and C=[[5,7],[1,0],[2,5]] .Find the matrix x such that 2A-3B+4x=C

6+6/100 of 14 2/7 -[6/10+(3/20-4/15+1/5)]+9 1/20

Consider the marks obtained by 50 students in a mathematics test for a total marks of 10. 5,8,6,4,2, 5,4,9,10,2, 1,1,3,4,5, 8,6,7,10,2, 1,1,3,4,4, 5,8,6,7,10, 2,8,6,4,2, 5,4,9,10,2, 1,1,3,4,5, 8,6,4,5,8