Convergent or Divergent for each series.?

algebra question

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  • rotchm
    Lv 7
    4 weeks ago

    Hint: Geom. Series, a*rⁿ. Converges for |r|<1. What are the other conditions? (if r=±1, say?, or |r|>1? Or on "a" ? You should know this by heart since you saw it. Or deduce it). 

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