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Find the Sum of the Series n=1(1)n+12n3n\sum _ { n = 1 } ^ { \infty } ( - 1 ) ^ { n + 1 } \frac { 2 ^ { n } } { 3 ^ { n } }

question 98

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Find the sum of the series n=1(1) n+12n3n\sum _ { n = 1 } ^ { \infty } ( - 1 ) ^ { n + 1 } \frac { 2 ^ { n } } { 3 ^ { n } } .


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