document.write( "Question 1009852: what is the domain of the function f(x)=ln(ln(ln(ln(x)))) ??
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Algebra.Com's Answer #625354 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "We want to find the domain of\r\n" );
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document.write( "Crux:  Only natural logs of positive numbers are real numbers.\r\n" );
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document.write( "because x must be positive\r\n" );
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document.write( "because ln(x) is only positive when x > 1\r\n" );
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document.write( "because  is only positive when x > e\r\n" );
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document.write( "because  is only positive when x > e^e.\r\n" );
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document.write( "Edwin

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