Hi guys,

Can anyone help me solve this integral:

Attachment 25401

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- October 25th 2012, 01:13 PMkaspersky0Integral-how to solve?
Hi guys,

Can anyone help me solve this integral:

Attachment 25401 - October 25th 2012, 09:21 PMhollywoodRe: Integral-how to solve?
I think you might make some progress by substituting u=ln(x), so du=(dx/x).

- Hollywood - October 26th 2012, 03:47 AMkaspersky0Re: Integral-how to solve?
I know for that kind of progress. But what is the next step? Thnx anyway ;)

- October 26th 2012, 08:16 AMhollywoodRe: Integral-how to solve?
Well, this is interesting. After substituting:

And then substituting again:

we have:

Now integrating by parts gives:

and we are stuck since can not be integrated in terms of elementary functions. See Exponential integral - Wikipedia, the free encyclopedia

Can anyone else help? Maybe I made a mistake somewhere.

- Hollywood - October 26th 2012, 09:13 AMkaspersky0Re: Integral-how to solve?
Yes, I got the same result. So I wanted to ask if anyone knows the solution...