$\"\"$

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The taylor series of $\"\"$ at $\"\"$ $\"\"$ is $\"\"$ .

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The function is $\"\"$ .

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Find $\"\"$ .

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

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$\"\"$ .

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Find the $\"\"$ coefficeient in the expansion of $\"\"$ .

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The coefficeient of $\"\"$ term is $\"\"$ .

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The expansion of $\"\"$ , the powers of $\"\"$ must be multiples of $\"\"$ .

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$\"\"$ is not multiple of $\"\"$ .

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Therefore, there is no term with power $\"\"$ .

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Therefore, the coefficient of $\"\"$ is zero.

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .