f=(1)/(9)[[-8,1,4],[4,4,7],[1,-8,4]]," prove that "A^(-1)=A^(1)

If A=(1)/(9)[{:(-8,1,4),(4,4,7),(1,-8,4):}] prove that A^(-1)=A^(T) .

If A= (1)/(9)[{:(-8,1,4),(4,4,7),(1,-8,4):}],"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 A= (1)/(9) ((-8,1,4),(4,4,7),(1,-8,4)) , prove that, A^(-1)= A^(T) . Hence solve the following system of equations: -8x + y + 4z= 0, 4x + 4y + 7z= 18, x- 8y + 4z= 9

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

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

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

[" 8"," I "],[" M ",(1)/(*)],[,(4)/(4)],[,(9)/(2)],[,(9)/(9)],[,9],[hline,(4)/(3)],[+,9],[hline,1],[,7],[,3],[,9],[hline,1],[hline,-,(1)/(3)],[,,]

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