Specify the Domain for the Function $f ( x ) = \sqrt { x ^ { 2 } - 4 }$

question 185

Multiple Choice

Specify the domain for the function. $f ( x ) = \sqrt { x ^ { 2 } - 4 }$

• A) \(D = [ 2 , \infty )\)
• B) \(D = ( - \infty , - 2 ] \cup [ 2 , \infty )\)
• C) \(D = [ - 2,2 ]\)
• D) \(D = ( - \infty , - 2 ) \cup ( 2 , \infty )\)

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