The domain of the function $f ( x ) = \sqrt { x + 5 }$ is all real numbers greater than or equal to zero.

Name: The domain of the function $f ( x ) = \sqrt { x + 5 }$ is all real numbers greater than or equal to zero.
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Quizplus · Accepted Answer

The radicand (expression under the square root) must be greater than or equal to zero for the function to be defined, so the domain is actually all real numbers greater than or equal to -5.

The Domain of the Function f(x)=x+5f ( x ) = \sqrt { x + 5 }f(x)=x+5​

The Domain of the Function $f ( x ) = \sqrt { x + 5 }$