$\"\"$

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The function is $\"\"$

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The function is continuous on $\"\"$ .

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Consider left hand limit, $\"\"$ .

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$\"\"$

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$\"\"$ .

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Consider right hand limit, $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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If the limit exists, then left side limit is equal to right side limit.

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$\"\"$ .

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$\"\"$ .

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$\"\"$ .

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The equation is in the form of quadratic equation $\"\"$ .

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The solutions of $\"\"$ are: $\"\"$ .

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In this case $\"\"$ and $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .