$\"\"$

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The function is $\"\"$

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From the definition of limit $\"\"$ .

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$\"\"$

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The value of limit $\"\"$ .

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$\"\"$

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Given $\"\"$ whenever $\"\"$

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$\"\"$

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$\"\"$

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Subtract $\"\"$ from each side.

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$\"\"$

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Since $\"\"$ then from above $\"\"$

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$\"\"$

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The value of limit is $\"\"$ and $\"\"$ .