document.write( "Question 445983: what is the domain of f(x)=ln(1/x+4).
\n" ); document.write( "I think it works out to set x+4=0
\n" ); document.write( "x=-4
\n" ); document.write( "domain is (-inf,-4)u(-4,inf) \n" ); document.write( "

Algebra.Com's Answer #307112 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"f%28x%29+=+ln+%28+1%2Fx+%2B+4+%29+\"$
\n" ); document.write( "There is no such thing as the log of a negative
\n" ); document.write( "number. That is like saying $\"+a%5Eb+=+-c+\"$
\n" ); document.write( "which is not possible.
\n" ); document.write( "Therefore, $\"++1%2Fx+%2B+4+%3E=+0+\"$
\n" ); document.write( " $\"+x+%3C=+-1%2F4+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+%3E=+0+\"$ \n" ); document.write( "

\n" );