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(a)

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The function are $\"\"$ and $\"\"$ .

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Find a function $\"\"$ such that $\"\"$ .

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$\"\"$

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Complete the square.

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$\"\"$

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From the above, it is clear that $\"\"$ .

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(b)

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The function are $\"\"$ and $\"\"$ .

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Find a function $\"\"$ such that $\"\"$ .

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$\"\"$

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(a) $\"\"$ .

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(b) $\"\"$ .