How can I integrate: ?
The obvious choice seems like substitution, but I got a bit stuck doing it that way:
If it were , then I could just multiply the limits by 2, but since there is a in there too, I'm not sure what to do, since it leaves the expression still with the unknown, , in there.
How can I do this?
Using this substitution, the original integral becomes ... which is not easier to evaluate than the previous one.