$\"\"$

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

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The composite function is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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The function is $\"\"$ .

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Denominator of the function should not be zero.

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$\"\"$

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$\"\"$

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$\"\"$ .

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The composite function $\"\"$ is continuous for all values of $\"\"$ except $\"\"$ and $\"\"$ .

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$\"\"$

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Non removable discontinuities at $\"\"$ and $\"\"$ .