# Solve integrals adding some assumptions?

GROUPS:
 I am trying to do some integrals and it seems that there is a problem !! I have tried to add some assumptions but still not working.If you have seen this kind of problems, please contact me.( running mode don't stop even after hours and no error message) Attachments:
 I would try polar coordinates. Your assumptions are a little strange: you integrate on z from -Infinity to +Infinity, but you assume z>=0.