Please use this
.
Notice that
.
Lets find integral
. Let and , then
.
Thus,
.
The correct answer is . So, I am still stuck on this problem. I am not sure what I am doing wrong. I would have the correct answer if I integrated from 0 to with respect to , but I don't thank that would be proper.
Note: The polar coordinates make things a little confusing, because the in the integrand is a constant and not related to .
I'm sorry to keep bringing this up, but I dont see how
and the rest of the expression above. I don't really understand your notation. I do see how you are using integration by parts, but I don't understand . I just don't see the equality posted above.
Sorry for beating a dead horse, but I want to understand this.
Thank you again.