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Rationalizing Substitutions

  1. Jun 26, 2006 #1
    [tex] \int \frac{e^3^x}{e^2^x+3e^x+2}dx[/tex]

    what should i substitute "u" for?
  2. jcsd
  3. Jun 26, 2006 #2


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    Science Advisor

    u= ex would be a good start!
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