document.write( "Question 124280This question is from textbook college algebra
\n" ); document.write( ": Find the domain and range
\n" ); document.write( " $\"f%28x%29=sqrt+%28x%5E2-49%29\"$ \n" ); document.write( "

Algebra.Com's Answer #91076 by Fombitz(32388) $\"\"$ $\"About$

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Domain is all x such that f(x) makes sense. Values inside a square root sign must be greater than or equal to 0.
\n" ); document.write( " $\"x%5E2-49%3E=0\"$
\n" ); document.write( " $\"x%5E2%3E=49\"$
\n" ); document.write( " $\"x%3E=7\"$
\n" ); document.write( " $\"x%3C=-7\"$
\n" ); document.write( "The domain is therefore all x except the range (-7,7) or the domain is
\n" ); document.write( "( $\"-infinity\"$ , $\"7\"$ ] U [ $\"7\"$ , $\"-infinity\"$ )
\n" ); document.write( "The brackets indicate that -7 and 7 belong in the domain.
\n" ); document.write( "The range is from [ $\"0\"$ , $\"infinity\"$ ). \n" ); document.write( "

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