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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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$\"\"$ .

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(b). Find $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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(c). Find $\"\"$ .

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

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$\"\"$

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Apply the formula: $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$ .

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(a). $\"\"$ .

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(b). $\"\"$ .

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(c). $\"\"$ .