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Using u-sub for inetgral(x^4sinxdx)

  1. Feb 23, 2012 #1
    So I came across a problem that said to use u-sub to solve:


    But the only way I could think of solving it is by the tabular method (or by parts.) I'm not asking in the sense of a homework question I'm just curious to see what I substitute u for in this problem.

  2. jcsd
  3. Feb 25, 2012 #2


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    hi aglo6509! :smile:

    (try using the X2 button just above the Reply box :wink:)

    i don't think you can solve that by a substitution :redface:
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