document.write( "Question 870833: Find the domain of f(x)=x2+2 and that two on the x is a little 2 above it. I just need one domain problem explained and I think I can get the rest. Finding domain is throwing me for a loop! \n" ); document.write( "

Algebra.Com's Answer #525175 by Fombitz(32388) $\"\"$ $\"About$

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Domain is the set of x values for which the function is defined.
\n" ); document.write( "A function like this $\"f%28x%29=x%5E2%2B2\"$ is defined for all x values.
\n" ); document.write( "A function like $\"g%28x%29=1%2Fx\"$ is defined for all x values except $\"x=0\"$ since division by zero is undefined.
\n" ); document.write( "A function like $\"h%28x%29=sqrt%28x%2B2%29\"$ is defined for all x except when $\"x%2B2%3C0\"$ or $\"x%3C-2\"$ since the square root of a negative number is not defined.
\n" ); document.write( "Look for the values which would cause the function to be undefined and those are the exceptions to the domain.
\n" ); document.write( "In this case,
\n" ); document.write( "Domain : ( $\"-infinity\"$ , $\"infinity\"$ )
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