document.write( "Question 731676: what is the domain of the function f(x)=3x^2/x^2-49? \n" ); document.write( "

Algebra.Com's Answer #447233 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
Here is a guess that you do not mean what you wrote but mean this instead:\r
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\n" ); document.write( "\n" ); document.write( "f(x)=(3x^2)/(x^2-49) as text
\n" ); document.write( "OR
\n" ); document.write( " $\"f%28x%29=%283x%5E2%29%2F%28x%5E2-49%29\"$ in rendered typesetting.\r
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\n" ); document.write( "\n" ); document.write( "The important restriction on the function is that $\"x%3C%3E-7\"$ and $\"x%3C%3E%2B7\"$ . The reason is that either of those values would make the denominator zero. The domain of f(x) is these three intervals:\r
\n" ); document.write( "\n" ); document.write( "(-infinity, -7)
\n" ); document.write( "(-7, +7)
\n" ); document.write( "(+7, +infinity). \n" ); document.write( "

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