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

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To find $\"\"$ , we need to find the domain of $\"\"$ .

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

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Now one can able to evaluate $\"\"$ for each value of $\"\"$ .

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

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Find $\"\"$ .

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$\"\"$

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Replace $\"\"$ with $\"\"$ .

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$\"\"$

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Substitute $\"\"$ for $\"\"$ 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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Therefore, $\"\"$ for $\"\"$ .

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To find $\"\"$ ,we need to find the domain of $\"\"$ .

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The domain of $\"\"$ is all real numbers.

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Now one can able to evaluate $\"\"$ for each value of $\"\"$ .

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

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This means that we must exclude it from the domain those values for which $\"\"$ .

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Solve the inequality $\"\"$ .

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Add $\"\"$ to each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Square of any real number is positive.

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Since $\"\"$ will never be less than zero, there are no $\"\"$ -values in the domain of $\"\"$ such that $\"\"$ .

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This means there is no restriction for the domain of $\"\"$ .

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Therefore, the domain of $\"\"$ is all real numbers.

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Find $\"\"$ .

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$\"\"$

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Replace $\"\"$ with $\"\"$ .

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$\"\"$

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Substitute $\"\"$ for $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore, $\"\"$ .

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$\"\"$ for $\"\"$ .

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$\"\"$ .