Find the Domain Of $x$ In the Expression $\sqrt { 81 - x ^ { 2 } }$

question 23

Multiple Choice

Find the domain of $x$ in the expression. Use a graphing utility to verify your result. $\sqrt { 81 - x ^ { 2 } }$

• A) \([ - 81,81 ]\)
• B) \(( - 9,9 )\)
• C) \([ - 9,81 )\)
• D) \([ - 9,9 ]\)
• E) \(( - 81,81 )\)

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