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**Izmael****Member**- Registered: 2010-03-28
- Posts: 4

Hi,

this integral was introduced as a problem in qualification round for regional olympiad. It took me an hour to solve. Can you solve it too?

I'm looking for your suggestions,**Izmael**

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,908

Hi tzmael;

Any of these what you want?

http://community.boredofstudies.org/sho … ?p=3316947

http://in.answers.yahoo.com/question/in … 624AAoHR5q

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**Izmael****Member**- Registered: 2010-03-28
- Posts: 4

Can't find any benefit on your answer. I know, there exist many same solutions on the internet for this problem. It should be a challenge. So you can bring new inovative approach to solve this.

Your third link is not correct. There's a function sin(ln(x)), which is a bit different.

My approach was about using the exponential

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,908

Izmael wrote:

Can't find any benefit on your answer.

Then you already knew all those ways? As you know my German is not good. But I thought they were Wunderbar!

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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