$\"\"$

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The expression is $\"\"$ .

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From the definition of $\"\"$ , $\"\"$ if $\"\"$ and $\"\"$ if $\"\"$ .

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Consider left hand side limit.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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Consider right hand side limit.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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If the limit exists, then the left hand side limit is equal to right hand side limit.

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$\"\"$ .

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The left hand side limit is not equal to right hand side limit.

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The limit does not exist.

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$\"\"$

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$\"\"$ is false.