Question

What is the domain of this function?

Answer 1

`\text{We know}\ √(a)\ \text{is exist for}\ a\geq0.\\\\\text{Therefore the domain of}\ f(x)=3√(x-2)\ \text{is:}\\\\x-2\geq0\qquad\text{add 2 to both sides}\\\\\boxed{x\geq2\to x\in[2,\ \infty)}`