Recent content by foldylocks

Thanks for your help! DH, I assume that approximation is only valid for small x correct? It seems as if N is very large, then the approximation wouldn't be a good one.

I am trying to follow the reasoning of the last problem in the set linked below. I can't figure out what approximation they used in step 24. Thanks. http://www.physics.fsu.edu/courses/spring08/phy5524/sol1.pdf It looks like it might be an approximation based on a geometric series, but there is...