$\"\"$

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The function is $\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$

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Product rule of derivative: $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Find the critical numbers.

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$\"\"$

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Equate $\"\"$ .

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$\"\"$

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Critical number is $\"\"$ .

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$\"\"$

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$\"\"$

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$

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$\"\"$

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

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$\"\"$

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$\"\"$ $\"\"$ .

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Absolute minimum value of the function is at $\"\"$ .

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Substitute $\"\"$ in the fucntion $\"\"$ .

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$\"\"$

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$\"\"$ .

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The absolute minimum of the function is $\"\"$ .

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$\"\"$

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Absolute minimum is $\"\"$ .