Question

help.

integral (cot^2 x csc x) dx

Answer 1

Split the cot^2 up into (1+ csc^2) then use u substitution

Answer 2

Notice that
\[
\cot ^2(x) \csc (x)=\csc (x) \left(\csc
^2(x)-1\right)=\csc ^3(x)-\csc (x)
\]
In every book, you can find ways how to integrate
\[

\csc ^3(x)\\and\\
\csc (x)
\]

Answer 3

http://answers.yahoo.com/question/index?qid=20080623173220AAyRTys

Answer 4

http://answers.yahoo.com/question/index?qid=20080225213623AAUQMz6
Apply the above two links with my post and you are done