MATLAB: What is function to find out adjoint of matrix…………is there any command…….

adjointMatrixVB

what is command to find adjoint of matrix

I don't think there is a function but you can always do:

det(A)*inv(A)

Your code works properly for 8x8 matrices.

What is the problem?

   I=(1:8).';
   J=I.';
   A=tril( (I+J).^2 )