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## #1 2010-03-28 09:39:01

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

### Integral challenge for masters

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?

Izmael

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## #2 2010-03-28 10:32:51

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

### Re: Integral challenge for masters

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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## #3 2010-03-29 09:45:36

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

### Re: Integral challenge for masters

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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## #4 2010-03-29 22:45:08

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Izmael wrote: