You can put this solution on YOUR website! First find the domain of can never be negative or zero.
This is true because there is no log to any base that
can give me a (-) or (0). can however be any (+) number
The natural log of The x's is (-), but you
can't take the natural log of those (-) numbers, so is the domain of f(x) = ln(ln(x))
Hope I got it