how to determine the radius of convergence of the power series Σ 2^(n) z^(nē). thanks in advance .regards.
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Originally Posted by sorv1986 how to determine the radius of convergence of the power series Σ 2^(n) z^(nē). thanks in advance .regards. I think if you try the root test you'll quickly see that the answer is .
Last edited by Drexel28; Dec 2nd 2011 at 09:30 AM.
Originally Posted by sorv1986 how to determine the radius of convergence of the power series Treat it as an ordinary series (rather than a power series) and use the ratio test: The limit of that as will depend on whether or not
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