$\"\"$

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The function is $\"\"$ .

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

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$\"\"$

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

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Rewrite the expression.

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$\"\"$

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$\"\"$

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$\"\"$

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

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$\"\"$

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Chain rule : $\"\"$ .

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Constant multiple and power rule : $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .