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Maths Problem

  1. Aug 14, 2005 #1
    How to solve this?

    ln ( ln ( ln ((e^x) +4)))=e
     
  2. jcsd
  3. Aug 14, 2005 #2

    Tide

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    Hint: The exponential function is the inverse of the natural logarithm.
     
  4. Aug 14, 2005 #3
    I do it in this way:

    e^e = ln ( ln ( e^x +4))
    e^e^e = ln (e^x +4)
    e^e^e^e = e^x +4
    x = 20

    Is it correct? Or is there any others more easier way?
     
  5. Aug 14, 2005 #4
    Correct. x = ln(e^e^e^e - 4) = 20.08553691561896
     
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