Find the Domain of the Rational Function $f ( x ) = \frac { x } { x ^ { 2 } - 81 }$

question 11

Multiple Choice

Find the domain of the rational function. $f ( x ) = \frac { x } { x ^ { 2 } - 81 }$

• A) \(( - \infty , 0 ) \cup ( 0,9 ) \cup ( 9 , \infty )\)
• B) \(( - \infty , - 9 ) \cup ( - 9,9 ) \cup ( 9 , \infty )\)
• C) \(( - \infty , 9 ) \cup ( 9 , \infty )\)
• D) \(( - \infty , 0 ) \cup ( 0 , \infty )\)
• E) \(( - \infty , \infty )\)

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