$\"\"$

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The definite integral is $\"\"$ .

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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 constant terms.

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$\"\"$

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Subtract equation (3) from equation (2).

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ in equations (3).

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in equations (3).

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$\"\"$

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$\"\"$

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Substitute $\"\"$ and $\"\"$ in equations (1).

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .