$\"\"$

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(a)

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

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Find $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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$\"\"$

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(b)

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Find $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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(c)

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Domain of $\"\"$ is all real numbers.

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Domain of $\"\"$ is all real numbers.

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$\"\"$ .

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The composite function has no restrictions, so all possible values of $\"\"$ is domain of the function.

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

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$\"\"$ .

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The composite function has no restrictions, so all possible values of $\"\"$ is domain of the function.

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

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$\"\"$

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(d)

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If $\"\"$ then $\"\"$ is true.

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$\"\"$

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(a) $\"\"$

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(b) $\"\"$

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(c) The domain of $\"\"$ and $\"\"$ is $\"\"$ .

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(d) If $\"\"$ then $\"\"$ is true.