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    Radius of Convergence of Complex Power Series

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    I have to find the radius of convergence for the following series:

    Sum from j = 0 to infinity of z^(3j)/2^j, and the answer according to my book is R = 2^(1/3).

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    https://brainmass.com/math/real-analysis/radius-convergence-complex-power-series-115395

    Solution Summary

    Radii of Convergence of Complex Power Series are investigated in the following posting.

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