$\"\"$

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The two functions are $\"\"$ and $\"\"$ .

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The expression is $\"\"$ for all $\"\"$ , except $\"\"$ .

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$\"\"$ .

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Let the function $\"\"$ .

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$\"\"$ .

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Consider $\"\"$ .

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$\"\"$ .

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Apply sum and difference rule $\"\"$ .

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$\"\"$

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$\"\"$ .

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Limit of $\"\"$ as $\"\"$ approaches $\"\"$ does not depend on the value of $\"\"$ at $\"\"$ .

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

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The statement is true.

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$\"\"$

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The statement is true.