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Identify the periodic function among the following:
- Sign function of e^x
- Sine of x added to the absolute value of sine of x
- Minimum of sine of x and absolute value of x
- Floor of x + 1/2 added to floor of x - 1/2 and twice the floor of -x
Correct answer: Floor of x + 1/2 added to floor of x - 1/2 and twice the floor of -x
Solution
The periodic function among the given options is identified by its repeating values over intervals, and in this case, the correct answer is the floor of x + 1/2 added to floor of x - 1/2 and twice the floor of -x.
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