$\"\"$

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The function is $\"\"$ .

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Apply derivative on each side with respect to x.

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$\"\"$

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$\"\"$

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$\"\"$

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Find the critical numbers of $\"\"$ , equate $\"\"$ to zero.

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$\"\"$

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For n = 0.

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$\"\"$

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For n = 1.

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$\"\"$

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For n = 2.

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$\"\"$

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$\"\"$ are in the region $\"\"$ .

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Critical points in the region is

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

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$\"\"$

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Find the absolute extreme of function in the region $\"\"$ using the graphing utility.

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$\"\"$

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Critical points $\"\"$ and $\"\"$ are the maximum point over the interval $\"\"$ .

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Critical point $\"\"$ is minimum point over the interval $\"\"$ .

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$\"\"$

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Minimum point is $\"\"$ .

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Maximum point are $\"\"$ and $\"\"$ .