Mathematics · Functions and Domain
The set of all real values of x such that f(x) = √([x] - 1[x]2 - [x] - 6) defines a real-valued function (where [x] denotes the greatest integer function) is given by:
- 1[1, ∞)
- 2(-∞, -2) ∪ [4, ∞)
- 3[-1, 3)
- 4[-1, 2) ∪ [4, ∞)✓
Correct answer
[-1, 2) ∪ [4, ∞)
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