$\"\"$

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

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Substitute the value of $\"\"$ in $\"\"$ and $\"\"$ .

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$\"\"$ .

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$\"\"$ . $\"\"$

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Substitute the value of $\"\"$ in $\"\"$ and $\"\"$ .

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$\"\"$ .

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$\"\"$ . $\"\"$

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Substitute the value of $\"\"$ in $\"\"$ and $\"\"$ .

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$\"\"$ .

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$\"\"$ . $\"\"$

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Substitute the value of $\"\"$ in $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$ . $\"\"$

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Completed table is :

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

\ $\"\"$ \	$\"\"$	$\"\"$	$\"\"$	$\"\"$
\ $\"\"$ \	$\"\"$	$\"\"$	$\"\"$	$\"\"$
\ $\"\"$ \	$\"\"$	$\"\"$	$\"\"$	$\"\"$

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Observe the table, $\"\"$ .

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So, the two functions are inverse functions to each other.