Q5 of 23 Page 2

Find the domain of the real valued function f (x) = root x-2 of real variable.


We know the square of a real number is never negative.


Clearly, f(x) takes real values only when x – 2 ≥ 0


⇒ x ≥ 2


∴ x ∈ [2, ∞)


Thus, domain of f = [2, ∞)

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