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The function is $\"\"$

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(a) Find $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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(b) Find $\"\"$ .

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

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$\"\"$ .

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(c) Find $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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(a) $\"\"$

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(b) $\"\"$

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(c) $\"\"$ .