For the series with general term

MATHEMATICS · Subjective · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

For the series with general term an=(−1)n+1bna_n=(-1)^{n+1}b_n, where bn>0b_n>0, state the limit condition on bnb_n that must be satisfied for the series to converge.

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