" 30.If "A=([x,1,4],[-1,0,7],[-4,-7,0])" such that "A^(T)=-A" then "x=

If A=[(x,1,4),(-1,0,7),(-4,-7,0)] such that A'=-A then x=

If A[[1,-3],[1,4]]=[[7,0],[0,7]] then A is :

Is [(0,1,4),(-1,0,7),(-4,-7,0)] symmetric or shew symmetric?

If |[x,0],[7,1]|=|[3,0],[7,1]| then x=

Is A=[{:(0,1,4),(-1,0,7),(-4,-7,0):}] symmetric or skew symmetric?

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, 3/5, x),(y, -5, -7),(-4,-7,0):}] is a symmetric matrix then the value of x and y are ______

If A=[[7,3,0],[0,4,-2]],B=[[0,-2,3],[2,1,-4]] ,then find A^T+4B^T