$\"\"$

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The functions are $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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Thus, $\"\"$ .

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$\"\"$

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$\"\"$

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Thus, $\"\"$ .

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$\"\"$ .

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Functions $\"\"$ and $\"\"$ are inverse functions.

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The domain of $\"\"$ is $\"\"$ .

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Excluded values of $\"\"$ is $\"\"$ .

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The domain of $\"\"$ is $\"\"$

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Excluded values of $\"\"$ is $\"\"$ .

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Excluded values of $\"\"$ is $\"\"$ and $\"\"$ .

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$\"\"$

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Functions $\"\"$ and $\"\"$ are inverse functions.

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Excluded values of $\"\"$ is $\"\"$ and $\"\"$ .