If `A=1/9[(-8,1,4),(4,4,7),(1,-8,4)]` then prove that `A^(-1)=A^(T)`

If A=1/9[[-8,1,4],[4,4,7],[1,-8,4]], show that A^-1=A'.

If [(x),(y),(z)]=(1)/(17) [(1,5,1),(8,6,-9),(10,-1,-7)][(8),(1),(4)] then the value of xyz is

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=[(1,4,4),(4,1,4),(4,4,1)] and A^(-1) exists and not equal to zero ,then (A^(2)-8A)A^(-1) =

Prove that: cos4A=1-8cos^(2)A+8cos^(4)A

If U = {1,2,3,4,5,6,7,8,9} and A = {1,2,3,4} , then (A^(c))^(c) = ……….. .

If =sin^(-1)(3t-4t^(3)),y=cos^(-1)(8t^(4)-8t^(2)+1) then (dy)/(dx)=

If A=[{:(2,-3,1),(0," "7,-9):}]" and "B=[{:(1,2,-3),(4,8,-4):}]," find "(A-B)