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20 September, 21:37

Find the domain of the function. (enter your answer using interval notation.) f (x) = x + 3 if x 1

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  1. 20 September, 21:49
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    The domain of the function is the union of all of the "if" parts of the function definition:

    ... (-∞, - 1) ∪ [-1, 1] ∪ (1, ∞) = (-∞, ∞)
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