$\"\"$

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The condition is :

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If $\"\"$ then $\"\"$ .

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Find the value of $\"\"$ .

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$\"\"$ definition of limit :

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$\"\"$ ,

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if for every number of $\"\"$ , there exists a $\"\"$ such that $\"\"$ whenever $\"\"$ .

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Compare the condition, if $\"\"$ then $\"\"$ with $\"\"$ definition of limit.

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Here $\"\"$ and $\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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Now consider $\"\"$ .

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$\"\"$ .

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Observe the graph.

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If $\"\"$ then $\"\"$ .

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From the graph, $\"\"$ .

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$\"\"$

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Compare $\"\"$ with $\"\"$ .

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$\"\"$ value should be a small positive number.

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Therefore,

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$\"\"$

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$\"\"$ .