Question

Domain of function f(x) = 1/√(|x| - x)

(A) R⁺

(B) R^–

(C) R₀

(D) R

Answer 1

Answer is (B)

It is clear that function is defined is x < 0 because [x ≥ 0 then f(x) = ∞]

Required domain of f(y) = R^–