Here’s another one:
It’s not too difficult to substitute:
if then , and so
Were we not in these fortunate circumstance to recognize it, we would have to resort to something like partial integration.
In that case we would choose and , next to and which is ridiculous if you’re not awake by now.
Nevertheless we end up with
and the integral repeats itself.
Well, integration is integration, not only in both ways, but in every way.