The Student Room Group
I remembered seeing this before somewhere and Google was my friend.

http://community.boredofstudies.org/14/mathematics-extension-2/167635/integration.html#post3316947

and here:

http://mathforum.org/library/drmath/view/72243.html

You may struggle with an indefinite integral!!!
Reply 2
Isn't that the definite integral which is possible?

http://www.wolframalpha.com/input/?i=integrate+ln%28sin+x%29
Reply 3
Yay for complex numbers.
...umm damn I've completely forgotton all of C4...
Reply 5
SimonM
Isn't that the definite integral which is possible?

http://www.wolframalpha.com/input/?i=integrate+ln%28sin+x%29


the 'polylogarithm function'?

I get dibs on the loganomial function :smile:
Reply 7
Similarly, try ln(1+tanx)dx\int \ln(1+\tan x)\,dx...
Reply 8
Hi,
Thanks for every one who responded. I made a mistake. It was the improper integral, that I needed to find.

Actually the definite integral I needed to find is integral {ln (t*cos t) dt.}

I think I should be able to do it now with the above help.

Thanks for the help again.
Reply 9
Thanks for every one for the help. My problem is resolved.
:biggrin: