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Integral of 1/(1+x^2)

  1. Mar 27, 2005 #1
    i have a question when you take the interal of 1/(1+x^2) is that still arctan(x) because i know it is arctan(x) if it is 1/(x^2 +1) thanks
  2. jcsd
  3. Mar 27, 2005 #2
    Yes. Addition is commutative.
  4. Mar 27, 2005 #3
    it was suppose to say integral sorry
  5. Mar 27, 2005 #4
    that is what i thought, but i just wanted to make sure thanks
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