How do you find the domain of $f(x) = (x - 3)^(1/2)$ ?

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Answer 1 · 2018-06-21T06:28:09

$x-3>=0$
so $x>=3$ this the domain is $[3, oo)$

For any even root, the expression under the radical must be greater than or equal to 0. Solving this inequality gives the domain.

How do you find the domain of f(x) = (x - 3)^(1/2)f(x) = (x - 3)^(1/2)?