Question
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Suppose that the function is defined, for all real numbers, as follows.

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Answer

and .

Solution

  1. To compute , note that since , we use the first piece of the definition:
    Therefore,
  2. To compute , observe that satisfies the condition , so again:
    Hence,

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Bonus Knowledge

To find and , we will look at the definition of the function .
For :
Since , we use the first part of the definition:
For :
Since is equal to , we still use the first part of the definition:
Therefore, we have:

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