Dear PHY293 Students, It has been pointed out to me that the solution to the standing wave equation that I included on the equation sheet had a typo (another one...). Both terms were the same ( C_n sin(kx)cos(wt) + D_n sin(kx)cos(wt) ). The second term should be D_n sin(kx)sin(wt). I have changed the version posted on the web and will make an announcement about this near the start of the exam tomorrow. Sorry, I'm pretty sure I've fixed this bug a couple of times in my notes already... Prof. Trischuk