Let A be a 2×2 matrix. If tr(A) = 8 and det(A) = 12,the eigenvalues of A is .

Let A and B be two n × n matrices, they have thesame eigenvalues and n linear independent eigenvalues, then ( ). 未知类型：{'options': ['A is similar to B.', 'A [img=14x23]17de9331bc2f299.png[/img] B, but |A − B| = 0.', 'A = B.', 'A is not necessarily similar to B, but det(A)=det(B).'], 'type': 102}

Which of the following statement about Time-independent Schrödinger equation is not true? A: It is satisfied by a wave function that is an eigenfunction of the Hamiltonian of the system. B: Any solution of this equation corresponds to a physically acceptable state of the system. C: An eigenvalue may correspond to several linearly independent eigenfunctions. D: Energy levels represent eigenvalues of this equation.