Step 1:

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The integral expression is $\"\"$ .

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$\"\"$ \ \

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Step 2:

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Partial decomposition of $\"\"$ .

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$\"\"$

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$\"\"$

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Equate the $\"\"$ coefficients.

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$\"\"$

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Equate the constant terms.

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$\"\"$

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Multiply each side of equation $\"\"$ by $\"\"$ .

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$\"\"$

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Add the equations $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in equation $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute the values $\"\"$ , $\"\"$ in equation $\"\"$ .

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$\"\"$

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Step 3:

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$\"\"$ $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Solution:

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