$\"\"$

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

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Definition of composite function : $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Domain of radical function is $\"\"$ .

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$\"\"$

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Domain of the composite function $\"\"$ is $\"\"$ .

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$\"\"$

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Domain of the composite function $\"\"$ is $\"\"$ .