If a function f : [2, ∞) → B defined by f (x) = x 2 – 4x + 5 is a bijection, then B is :

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

1. R
2. [1, ∞)
3. [4, ∞)
4. [5, ∞)

Answer

(B) [1, ∞ )

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