The domain of the function f (x) = 1 x^ 12 -x^ 9 +x^ 4 -x+1 is

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

1. (–∞, –1)
2. (1, ∞)
3. (–1, 1)
4. (–∞, ∞)

Answer

(D) (– ∞ , ∞ )

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