$\"\"$

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The function is $\"\"$ .

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

\

$\"\"$

\

$\"\"$

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Apply power rule of differentiation: $\"\"$ .

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$\"\"$

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Apply formula: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$

\

Again apply derivative on each side with respect to $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Apply product rule of differentiation: $\"\"$ .

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In this case $\"\"$ and $\"\"$ .

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$\"\"$

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Apply formula: $\"\"$ .

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$\"\"$

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$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .