Question

Which of the following is the domain of the function below?



f(x) = - 2−x−−−−−√ +1


(1 point)

{x: x < 2}



{x: x≤ 2}



{x: x >2}



{x: x ≥ 2 }

Answer 1

We require the expression inside the square root to be ≥ 0: 2 − x ≥ 0 ⇒ x ≤ 2.

So the domain is {x: x ≤ 2}.