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anonymous
 5 years ago
find the radius and interval of convergence for the following series:
summation(from one to infinite) of (91)^n))*((x3)^n)/n
anonymous
 5 years ago
find the radius and interval of convergence for the following series: summation(from one to infinite) of (91)^n))*((x3)^n)/n

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(91)^(n)*((x3)^(n))/(n) Subtract 1 from 9 to get 8. (8)^(n)*((x3)^(n))/(n) Multiply the rational expressions to get ((8)^(n)(x3)^(n))/(n). ((8)^(n)(x3)^(n))/(n)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oops. That 9 wasnt supposed to be in there...(1)^n))*((x3)^n)/n. Thats what it should be. Haha, sorryyy.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(1)^(n)*((x3)^(n))/(n) Multiply the rational expressions to get ((1)^(n)(x3)^(n))/(n). ((1)^(n)(x3)^(n))/(n)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Are you sure? I thought that you use the ratio test and plug in n+1 every time there's an n....
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