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Trigonometric substution

  1. Mar 2, 2012 #1
    Evalutate ∫ytan^-1(y) dy

    i don't know how to start, can somebody tell me how?
  2. jcsd
  3. Mar 2, 2012 #2


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    Homework Helper

    It's not a trig substitution problem, it's an integration by parts problem. Try u=arctan(y) and dv=ydy.
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