$\"\"$

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The indefinite integral is $\"\"$ .

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Apply sum and difference rule in integration: $\"\"$ . $\"\"$ .

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Let $\"\"$

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Apply formulae: $\"\"$ and $\"\"$ .

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$ .

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

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$\"\"$ .