Question

Find the domain of the following function: lower f left parenthesis x right parenthesis equals Start Root x minus 4 End Root. Write your answer in interval notation.

Answer 1

The square root function is defined for all non-negative real numbers. Therefore, the domain of f(x) = √(x-4) is x ≥ 4.

In interval notation, this is represented as [4, ∞).