In Quantum, I ran across the eigenvalue problem. They gave me a matrix, and i was asked to find eigenvalues and then eigenvectors. But the eigenvalues, were degenerate and thus i couldn't find the exact normalized eigenvector. What to do in this case? Shoukd i choose arbitrary values? My other question is about another problem, they gave me a matrix and i got no degenrate eigenvakues, anyway when i wanted to find eigenvector, i tried normalizing it, so i got let's say: y^2=4 so y=±2 What do i choose? Does it make a difference?