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Originally Posted by liyi Evaluate You can write,
Now let and we get,
This integral is doable.
You could try it this way:
One way is you can use Integration by Parts for this:
Then you get
Now, use parts again:
Putting it together, we end up with:
Now, as you can see, as L approaches 1, we have:
Last edited by galactus; January 13th 2008 at 12:23 PM.
Originally Posted by liyi Evaluate Double integration leads TPH's integral too. So
Now this is routine, substitute
The rest follows.
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