How many functions are both even and odd?  (Assume that the domain of the function is the set of all real numbers.)
Question:
How many functions are both even and odd?  (Assume that the domain of the function is the set of all real numbers.)
Answer:
Let's think step by step.

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How many functions are both even and odd?  (Assume that the domain of the function is the set of all real numbers.)
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