For the following geometric serie, find the range of values of x for which the sum to infinity of the serie exist.

Please help me with that problem.

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- September 12th 2009, 07:55 AMkasia.ogorthe sum to infinity
For the following geometric serie, find the range of values of x for which the sum to infinity of the serie exist.

Please help me with that problem. - September 12th 2009, 10:17 AMred_dog
Let

Then

converges if