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Integral help

  1. Sep 11, 2008 #1
    1. The problem statement, all variables and given/known data
    It looks deceptively easy, but I can't seem to get it...

    2. Relevant equations

    [tex]\sec^2{x} = \tan^2{x} +1[/tex]

    3. The attempt at a solution
    I've tried, but they all end up as trigonometric polynomials
    Last edited: Sep 11, 2008
  2. jcsd
  3. Sep 11, 2008 #2


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    Science Advisor
    Homework Helper

    It IS easy. Substitute u=tan(x).
  4. Sep 11, 2008 #3
    ah shoot! Thanks, now I got it
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