$\"\"$

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The integral is $\"\"$ .

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Let $\"\"$ , then $\"\"$ .

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Substitute corresponding values in $\"\"$ .

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$\"\"$

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$\"\"$

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Solve the above integral by using partial fractions.

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Partial fractions decomposition.

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$\"\"$

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$\"\"$

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Equate coefficients of $\"\"$ terms.

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$\"\"$

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Equate coefficients of $\"\"$ terms.

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$\"\"$

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Equate coefficients of $\"\"$ terms.

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$\"\"$

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Equate constant terms.

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$\"\"$

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If $\"\"$ , then $\"\"$ .

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If $\"\"$ , then $\"\"$ .

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Substitute $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ in equation (1).

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .