$\"\"$

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The function is $\"\"$ .

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The point is $\"\"$ .

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Consider point on the curve $\"\"$ .

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Find the distance between $\"\"$ and $\"\"$ .

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Distance formula is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Differentiate on each side with respect to $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Equate $\"\"$ to zero.

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$\"\"$

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$\"\"$

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The roots are $\"\"$ , $\"\"$ and $\"\"$ .

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Imaginary roots are considered, hence $\"\"$ .

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Substituite $\"\"$ in the function.

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$\"\"$ .

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$\"\"$ .

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The point closest to the point $\"\"$ is $\"\"$ .

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$\"\"$

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The point of the closest to the point $\"\"$ is $\"\"$ .