Given that the domain of F (X & # 178; - 1) is [- 1,2], then the domain of F (x) is () Given that the domain of F (X & # 178; - 1) is (- 1,2), then the domain of F (x) is ().

Given that the domain of F (X & # 178; - 1) is [- 1,2], then the domain of F (x) is () Given that the domain of F (X & # 178; - 1) is (- 1,2), then the domain of F (x) is ().

The domain of solution f (X & # 178; - 1) is [- 1,2],
That is, X belongs to [- 1,2],
That is - 1 ≤ x ≤ 2
That is, 0 ≤ X & # 178; ≤ 4
That is - 1 ≤ X & # 178; - 1 ≤ 3
That is to say, the action range of the corresponding rule f is [- 1,3]
That is to say, the domain of F (x) is ([- 1,3])