# nice integral :D

• Mar 19th 2010, 09:53 AM
vivancos
nice integral :D
Evaluate (Rock)

$\int_0^{\frac{\pi }
{2}} {\frac{{x^2 }}
{{x^2 + \ln ^2 \left( {2\cos x} \right)}}dx}$
• Mar 20th 2010, 12:56 AM
CaptainBlack
Quote:

Originally Posted by vivancos
Evaluate (Rock)

$\int_0^{\frac{\pi }
{2}} {\frac{{x^2 }}
{{x^2 + \ln ^2 \left( {2\cos x} \right)}}dx}$

More context/background

CB
• Mar 20th 2010, 03:29 AM
mr fantastic
Quote:

Originally Posted by CaptainBlack
More context/background

CB

To expand upon CB's request: Are you posting this question because you need help, or are you posting this question as a challenge question to other members.
• Mar 20th 2010, 06:01 AM
vivancos
It is a challenge for the users
• Mar 20th 2010, 07:04 AM
CaptainBlack
Quote:

Originally Posted by vivancos
It is a challenge for the users

Then please post to the challenges forum (and send a solution by PM to MrFantastic and captainblack)

CB

Mr F edit: Link added: http://www.mathhelpforum.com/math-he...enge-problems/. And be sure to follow the rules of this subforum that are clearly set out in the stickies.
• Mar 20th 2010, 08:29 AM
Ted
Quote:

Originally Posted by CaptainBlack
Then please post to the challenges forum (and send a solution by PM to MrFantastic and captainblack)

CB

What if the OP do not know the solution?

PM: There is no need for this step! what is the point of sending the solution to you?
• Mar 20th 2010, 09:52 AM
running-gag
Quote:

Originally Posted by Ted
What if the OP do not know the solution?

PM:There is no need for this step! what is the point of sending the solution to you?

Just to be sure that there is a solution otherwise it is useless to search
In any case the OP should be more explicit when posting such a message and post in the right sub-forum
• Mar 20th 2010, 11:46 AM
CaptainBlack
Quote:

Originally Posted by Ted
What if the OP do not know the solution?

PM: There is no need for this step! what is the point of sending the solution to you?

Well for one thing we will delete your post otherwise, only trusted posters are allowed to post into the challenges forum, everyone else must prove that this is a challenge and not either homework or something they have concocted without a solution.

Finally because we say so.

CB