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The limit is $\"\"$ .

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$\"\"$

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Quotient law of limit : $\"\"$ , if $\"\"$ .

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$\"\"$

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Sum and difference law of limit : $\"\"$ .

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$\"\"$

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Theorem : If $\"\"$ is a rational number then $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$ .