The function f (x) = ( x) + sin –1 ( 1+x^ 2 2 x ) is defined for :

Mathematics · JEE Advanced · NTA Exams — Sets, Relations and Functions

1. x ∈ {–1, 1}
2. x ∈ [–1, 1]
3. x ∈ R
4. x ∈ (–1, 1)

Answer

(A) x ∈ –1, 1

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