$\"\"$

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The function is $\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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$\"\"$ $\"\"$

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Substitute $\"\"$ in the function $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

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$\"\"$

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$\"\"$

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$\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .