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

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Find the sum of two functions.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Domain of $\"\"$ .

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Domain of $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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Therefore, the domain of $\"\"$ is $\"\"$ .

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Find the difference of two functions.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Domain of $\"\"$ .

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Domain of $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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Therefore, the domain of $\"\"$ is $\"\"$ .

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Find the product of two functions.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Domain of $\"\"$ .

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Domain of $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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Therefore, the domain of $\"\"$ is $\"\"$ .

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Find the quotient of two functions.

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$\"\"$

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$\"\"$ .

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Domain of $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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Domain of $\"\"$ .

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The function $\"\"$ is not defined at $\"\"$ .

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The domain of $\"\"$ is $\"\"$ .

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$\"\"$ ; domain is $\"\"$ .

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$\"\"$ ; domain is $\"\"$ .

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$\"\"$ ; domain is $\"\"$ .

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$\"\"$ ; domain is $\"\"$ .