How do you find the sum of sum from n=0 to infinity of (n(-2)^n)/(2^n). Do I use alternating series test and geometric series?
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Originally Posted by Preston019 How do you find the sum of sum from n=0 to infinity of (n(-2)^n)/(2^n). Do I use alternating series test and geometric series? Note that so So what?
Originally Posted by Plato Note that so So what? It's divergent, right?
Yes, any series with terms that do not go to 0 is divergent.
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