Hi guys What I have isn't really a 'homework problem', but I thought I'd post it here anyway. We're doing sort of an introduction to integration currently (areas between curves, u substititon etc) and one of the problems we had involved finding the x intercept of two functions first. It ended up being x = 200sin (pi x/120) Our instructor told us that that was very difficult to solve algebraically and required the use of 'very fancy maths'. We just solved it graphically and continued on, but I would be interested to see the solution found algebraically. I won't bother posting my attempt, as it isn't a homework problem I don't feel the need. I hope that's alright.