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Walkthrough of these two integral questions?

  1. Oct 28, 2011 #1
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Oct 28, 2011 #2


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    For (1), let u= ln(t). What is du?

    For (2), let [itex]u= tan^{-1}(x)= arctan(x)[/itex]. What is du?
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