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anonymous
 5 years ago
How do you find the sum of 1/(8^n) from n=1 to infinity? I know it equals 8/49 but I don't know how/why
anonymous
 5 years ago
How do you find the sum of 1/(8^n) from n=1 to infinity? I know it equals 8/49 but I don't know how/why

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nikvist
 5 years ago
Best ResponseYou've already chosen the best response.1\[\sum_{n=1}^{+\infty}\frac{1}{8^n}=\frac{1}{8}+\frac{1}{8^2}+\frac{1}{8^3}+\cdots =\frac{1}{8}\cdot\frac{1}{11/8}=\frac{1}{7}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0sorry i meant the sum of n/8^n
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