$\"\"$

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The expression is $\"\"$ .

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(a)

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Rewrithe the expression as $\"\"$ .

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Binomial series:

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If $\"\"$ is any real number and $\"\"$ , then $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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(b)

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Find the series for $\"\"$ .

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The binomial expansion of $\"\"$ .

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$\"\"$

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Apply integral on each side.

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find the value of $\"\"$ .

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

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$\"\"$

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$\"\"$ .

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

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$\"\"$ .

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$\"\"$

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(a) $\"\"$ .

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(b) $\"\"$ .