Okay, so I'm now reviewing ladder operators (no, not homework). While reviewing a quantum problem involving the L_z operator at this website (http://quantummechanics.ucsd.edu/ph130a/130_notes/node219.html#example:expectLz"), I found myself confused. Okay, here's my question: don't we need to take the complex conjugate of the wavefunction for the bra? They have -i for both the bra and the ket... Am I wrong? It's been a while since I took quantum, so it's possible I'm not recalling some stuff properly... Thanks, Geez PS...Sorry, I don't know how to TeX (but feel free to teach me or show me some good resources to learn), so I don't know how else to show you what I'm talking about.