Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: I have question about one integral

  1. Mar 25, 2010 #1
    3. The attempt at a solution

    Thanks in advance for your help...


    ∫[1/(1+x^2)^2] dx
     
  2. jcsd
  3. Mar 25, 2010 #2

    rock.freak667

    User Avatar
    Homework Helper

    What did you try?

    Did you try integration by parts, substitution?
     
  4. Mar 25, 2010 #3
    I managed to get it by using substitution and then parts. Try making u=1/(1+x^2) and then when you get du, use u=1/(1+x^2) to solve for x to replace x with u. After that, use parts. Hope that helps I can give a more detailed answer if you still are having trouble.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook