(a) Determine if the following series is convergent. Find its sum if it is convergent. (-2)³n e 2n n=1 (b) Find n²+1 1 im () (sin ()). Зп-1 2n+1 If it does not exist, explain why.

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Q: What are the first four terms of a Maclaurin series for  y(x) = (1+ x)-3 ?

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A: We Use Ratio Test for Radius of Convergence and Interval of Convergence.

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