Math Problem

Earlier today, one of my friends posted us a maths question. It is quite interesting as many of us can't solve the problem.





The question is: How do you solve for this:






Okay, how do you solve for it?
Do you use integration by parts? Is it possible to do it?
If not, what method do you applied?

One good way is to refer to the integral tables [here. Hint: 57 ]
You can refer to [wiki] for an introduction to integral tables or tables of integrals.

Do you get it? :D

- wong chee tat :)