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. A sequence { bn } is defined recursively bn= -bn-1/2, where b1 = 3. (a)...

. A sequence { bn } is defined recursively bn= -bn-1/2, where b1 = 3. (a) Find an explicit formula for the general term of the bn = f(n). (b) Is the sequence convergent or divergent? (c) Consider the series ∑ approaches infinity and n=1 bn.  Is this series convergent or divergent? (d) If it is convergent, find its sum

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