Algebra-1

Question Analysis
This question tests the understanding of the domain of a piecewise function, which is the union of the domains of its individual pieces.

Key Concept Explanation
The domain of a piecewise function is the set of all possible -values for which the function is defined.

Step-by-step Solution
1. Identify the domain of each piece of the function:
- For when , the domain is
- For when , the domain is

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