i have an idea on how to solve this problem, but it seems like itd be way too much work to even be possible...

triple integral over R of dV / (x^2 + y^2 + z^2)

where R is the region between:

x^2 + y^2 + z^2 = 1

x^2 + y^2 + z^2 = 4

am i correct in thinking that first i have put convert to spherical coordinates and then insert pdpdthetadphi?

ps how do you insert the integral symbol and all that fun stuff?