Find the Domain of \(f(x)=\sqrt{x-2}\)
Question:
Find the domain of the following real valued function of real variable:
$$
f(x)=\sqrt{x-2}
$$
Solution
Given: $$ f(x)=\sqrt{x-2} $$
For a square root function, the expression inside the root must be non-negative.
Therefore, $$ x-2\ge0 $$
$$ x\ge2 $$
Hence, the domain is: $$ [2,\infty) $$