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\

$\"\"$

\

$\"\"$

\

Re-write the expression

\

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\

$\"\"$

\

$\"\"$

\

Apply Derivative on each side.

\

$\"\"$

\

$\"\"$

\

Now let us consider the first term,

\

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\

$\"\"$

\

$\"\"$

\

Now let us consider the second term

\

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\

$\"\"$

\

$\"\"$

\

Therefore

\

$\"\"$