Find All Positive Values of U for Which the Series $\sum _ { m = 1 } ^ { \infty } 3 u ^ { \ln 9 m }$

question 42

Multiple Choice

Find all positive values of u for which the series $\sum _ { m = 1 } ^ { \infty } 3 u ^ { \ln 9 m }$ converges.

• A) \(4 < u < \frac { 7 } { e }\)
• B) \(0 < u < \frac { 1 } { e }\)
• C) \(u > \ln 7\)
• D) \(u > 7\)
• E) \(u < 4\)

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