i tried that but i keep getting a -2u on the bottom of the fraction which, when I substitute u=0, i get an undefined answer! can someone please explain how to use integration by parts in this question?
i tried that but i keep getting a -2u on the bottom of the fraction which, when I substitute u=0, i get an undefined answer! can someone please explain how to use integration by parts in this question?
There should be no trouble here:
When you do the inner integral you obviously get .