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Homework Help: Finding this Integral

  1. Jan 6, 2009 #1
    I tried several ways to find this it's just making me confused.
    Integral of e^(2x)sin(e^x)dx

    I tried Integration by parts but i cant seem to find out the integral of sin(e^x).
  2. jcsd
  3. Jan 6, 2009 #2
    how about letting u = e^x... and you do know that e^(2x) = e^x * e^x so...
  4. Jan 6, 2009 #3
    hm, thanks ill try that
  5. Jan 6, 2009 #4
    Here's another hint, you will eventually need to use integration by parts.
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