Question: 3. Use Ratio Test or Root Test to determine whether the following infinite series are absolutely convergent. 00 (a) _(-1)+1 3 3 n=1 n 00

3. Use Ratio Test or Root Test to determine whether the following infinite series are absolutely convergent. 00 (a) _(-1)+1 3" 3 n=1 n 00 ( b ) In(n) n V n=2 n 4. Find the interval of convergence for the power series 18 (a) E x n+1 2n + 1 n ( b ) E n=1

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