$\"\"$

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(a)

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The limit expression is $\"\"$ .

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$\"\"$ is in the form of $\"\"$ .

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Assume $\"\"$ .

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$\"\"$

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$\"\"$

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Apply L $\"\"$ Hopital $\"\"$ s Rule.

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L $\"\"$ Hopital $\"\"$ s Rule: If $\"\"$ or $\"\"$ then $\"\"$ .

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$\"\"$

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Therefore $\"\"$ .

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$\"\"$ .

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$\"\"$

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(b)

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The limit expression is $\"\"$ .

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$\"\"$ is in the form of $\"\"$ .

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Assume $\"\"$ .

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$\"\"$

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$\"\"$

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Apply L $\"\"$ Hopital $\"\"$ s Rule.

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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(c)

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The limit expression is $\"\"$ .

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$\"\"$ is in the form of $\"\"$ .

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Assume $\"\"$ .

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$\"\"$

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$\"\"$

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Apply L $\"\"$ Hopital $\"\"$ s Rule.

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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(a) $\"\"$ .

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(b) $\"\"$ .

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(c) $\"\"$ .