The function is $\"\"$ .

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Let $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ ......... ( 1 ),

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$\"\"$

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$\"\"$ ............ ( 2 )

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From ( 1 ) and ( 2 )

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$\"\"$

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Replace y with x.

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$\"\"$ .

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The inverse of $\"\"$ is $\"\"$ .

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