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

  • Thread starter frozen7
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164
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How to solve this?

ln ( ln ( ln ((e^x) +4)))=e
 

Answers and Replies

Tide
Science Advisor
Homework Helper
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Hint: The exponential function is the inverse of the natural logarithm.
 
164
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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?
 
128
0
frozen7 said:
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?
Correct. x = ln(e^e^e^e - 4) = 20.08553691561896
 

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