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Homework Help: How do you prove ln(e^x) = x

  1. Apr 10, 2012 #1
    1. The problem statement, all variables and given/known data
    How do you prove ln(e^x) = x?

    2. Relevant equations

    3. The attempt at a solution
    I just memorized this but want to know how I can prove this
  2. jcsd
  3. Apr 10, 2012 #2


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    Science Advisor
    Homework Helper

    It's the definition of ln(x) that it is the inverse of e^x. If you want another way then ln(e^x)=x*ln(e). What's ln(e)?
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