Its quantum computing but related to math: 1. The problem statement, all variables and given/known data show every hermitian matrix can be diagonalized by unitary matrix. Prove this using. N x N matrix. 2. Relevant equations H= hermitian matrix. U = unitary matrix show U-1(inverse)HU = D (diagonal) using N x N matrix. 3. The attempt at a solution I don't know how to start. Any help would be helpful.