SOLUTION: hi ..devnull@algebra.com <devnull@algebra.com> i can't see the solution of the question 355616>> show that the integration of ( cos3x / (x^2 + 1 )^2 ) = 2pi / e^3 would u

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: hi ..devnull@algebra.com <devnull@algebra.com> i can't see the solution of the question 355616>> show that the integration of ( cos3x / (x^2 + 1 )^2 ) = 2pi / e^3 would u       Log On


   

Question 355637: hi ..devnull@algebra.com
i can't see the solution of the question 355616>>
show that the integration of ( cos3x / (x^2 + 1 )^2 ) = 2pi / e^3

would u please send me the like of the answer..
thanks a lot ..
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You didn't put down limits of integration.
Here's a link to www.wolframalpha.com that shows the steps to integration.
It's a fairly lengthy procedure.
Good luck!
http://www.wolframalpha.com/input/?i=integrate+%28+cos%283x+%29%29%2F+%28x%5E2+%2B+1+%29%5E2+